20408976

素因数分解:

$2^4\times 3^3\times 7^1\times {\mathrm{17}}^1\times {\mathrm{397}}^1$

素因数の和:438

約数の個数: 160

約数和(自身を含む): 71066880

約数和(自身を除く): 50657904

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 16, 17, 18, 21, 24, 27, 28, 34, 36, 42, 48, 51, 54, 56, 63, 68, 72, 84, 102, 108, 112, 119, 126, 136, 144, 153, 168, 189, 204, 216, 238, 252, 272, 306, 336, 357, 378, 397, 408, 432, 459, 476, 504, 612, 714, 756, 794, 816, 918, 952, 1008, 1071, 1191, 1224, 1428, 1512, 1588, 1836, 1904, 2142, 2382, 2448, 2779, 2856, 3024, 3176, 3213, 3573, 3672, 4284, 4764, 5558, 5712, 6352, 6426, 6749, 7146, 7344, 8337, 8568, 9528, 10719, 11116, 12852, 13498, 14292, 16674, 17136, 19056, 20247, 21438, 22232, 25011, 25704, 26996, 28584, 33348, 40494, 42876, 44464, 47243, 50022, 51408, 53992, 57168, 60741, 66696, 75033, 80988, 85752, 94486, 100044, 107984, 121482, 133392, 141729, 150066, 161976, 171504, 182223, 188972, 200088, 242964, 283458, 300132, 323952, 364446, 377944, 400176, 425187, 485928, 566916, 600264, 728892, 755888, 850374, 971856, 1133832, 1200528, 1275561, 1457784, 1700748, 2267664, 2551122, 2915568, 3401496, 5102244, 6802992, 10204488, 20408976]

約数ペア:

[(1, 20408976), (2, 10204488), (3, 6802992), (4, 5102244), (6, 3401496), (7, 2915568), (8, 2551122), (9, 2267664), (12, 1700748), (14, 1457784), (16, 1275561), (17, 1200528), (18, 1133832), (21, 971856), (24, 850374), (27, 755888), (28, 728892), (34, 600264), (36, 566916), (42, 485928), (48, 425187), (51, 400176), (54, 377944), (56, 364446), (63, 323952), (68, 300132), (72, 283458), (84, 242964), (102, 200088), (108, 188972), (112, 182223), (119, 171504), (126, 161976), (136, 150066), (144, 141729), (153, 133392), (168, 121482), (189, 107984), (204, 100044), (216, 94486), (238, 85752), (252, 80988), (272, 75033), (306, 66696), (336, 60741), (357, 57168), (378, 53992), (397, 51408), (408, 50022), (432, 47243), (459, 44464), (476, 42876), (504, 40494), (612, 33348), (714, 28584), (756, 26996), (794, 25704), (816, 25011), (918, 22232), (952, 21438), (1008, 20247), (1071, 19056), (1191, 17136), (1224, 16674), (1428, 14292), (1512, 13498), (1588, 12852), (1836, 11116), (1904, 10719), (2142, 9528), (2382, 8568), (2448, 8337), (2779, 7344), (2856, 7146), (3024, 6749), (3176, 6426), (3213, 6352), (3573, 5712), (3672, 5558), (4284, 4764)]