2500000020

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{109}}^2\times {\mathrm{167}}^1$

素因数の和:407

約数の個数: 216

約数和(自身を含む): 8799283584

約数和(自身を除く): 6299283564

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 109, 126, 140, 167, 180, 210, 218, 252, 315, 327, 334, 420, 436, 501, 545, 630, 654, 668, 763, 835, 981, 1002, 1090, 1169, 1260, 1308, 1503, 1526, 1635, 1670, 1962, 2004, 2180, 2289, 2338, 2505, 3006, 3052, 3270, 3340, 3507, 3815, 3924, 4578, 4676, 4905, 5010, 5845, 6012, 6540, 6867, 7014, 7515, 7630, 9156, 9810, 10020, 10521, 11445, 11690, 11881, 13734, 14028, 15030, 15260, 17535, 18203, 19620, 21042, 22890, 23380, 23762, 27468, 30060, 34335, 35070, 35643, 36406, 42084, 45780, 47524, 52605, 54609, 59405, 68670, 70140, 71286, 72812, 83167, 91015, 105210, 106929, 109218, 118810, 127421, 137340, 142572, 163827, 166334, 178215, 182030, 210420, 213858, 218436, 237620, 249501, 254842, 273045, 327654, 332668, 356430, 364060, 382263, 415835, 427716, 499002, 509684, 534645, 546090, 637105, 655308, 712860, 748503, 764526, 819135, 831670, 998004, 1069290, 1092180, 1146789, 1247505, 1274210, 1497006, 1529052, 1638270, 1663340, 1911315, 1984127, 2138580, 2293578, 2495010, 2548420, 2994012, 3276540, 3742515, 3822630, 3968254, 4587156, 4990020, 5733945, 5952381, 7485030, 7645260, 7936508, 9920635, 11467890, 11904762, 13888889, 14970060, 17857143, 19841270, 22935780, 23809524, 27777778, 29761905, 35714286, 39682540, 41666667, 55555556, 59523810, 69444445, 71428572, 83333334, 89285715, 119047620, 125000001, 138888890, 166666668, 178571430, 208333335, 250000002, 277777780, 357142860, 416666670, 500000004, 625000005, 833333340, 1250000010, 2500000020]

約数ペア:

[(1, 2500000020), (2, 1250000010), (3, 833333340), (4, 625000005), (5, 500000004), (6, 416666670), (7, 357142860), (9, 277777780), (10, 250000002), (12, 208333335), (14, 178571430), (15, 166666668), (18, 138888890), (20, 125000001), (21, 119047620), (28, 89285715), (30, 83333334), (35, 71428572), (36, 69444445), (42, 59523810), (45, 55555556), (60, 41666667), (63, 39682540), (70, 35714286), (84, 29761905), (90, 27777778), (105, 23809524), (109, 22935780), (126, 19841270), (140, 17857143), (167, 14970060), (180, 13888889), (210, 11904762), (218, 11467890), (252, 9920635), (315, 7936508), (327, 7645260), (334, 7485030), (420, 5952381), (436, 5733945), (501, 4990020), (545, 4587156), (630, 3968254), (654, 3822630), (668, 3742515), (763, 3276540), (835, 2994012), (981, 2548420), (1002, 2495010), (1090, 2293578), (1169, 2138580), (1260, 1984127), (1308, 1911315), (1503, 1663340), (1526, 1638270), (1635, 1529052), (1670, 1497006), (1962, 1274210), (2004, 1247505), (2180, 1146789), (2289, 1092180), (2338, 1069290), (2505, 998004), (3006, 831670), (3052, 819135), (3270, 764526), (3340, 748503), (3507, 712860), (3815, 655308), (3924, 637105), (4578, 546090), (4676, 534645), (4905, 509684), (5010, 499002), (5845, 427716), (6012, 415835), (6540, 382263), (6867, 364060), (7014, 356430), (7515, 332668), (7630, 327654), (9156, 273045), (9810, 254842), (10020, 249501), (10521, 237620), (11445, 218436), (11690, 213858), (11881, 210420), (13734, 182030), (14028, 178215), (15030, 166334), (15260, 163827), (17535, 142572), (18203, 137340), (19620, 127421), (21042, 118810), (22890, 109218), (23380, 106929), (23762, 105210), (27468, 91015), (30060, 83167), (34335, 72812), (35070, 71286), (35643, 70140), (36406, 68670), (42084, 59405), (45780, 54609), (47524, 52605)]