81688880

素因数分解:

$2^4\times 5^1\times 7^3\times {\mathrm{13}}^1\times {\mathrm{229}}^1$

素因数の和:276

約数の個数: 160

約数和(自身を含む): 239568000

約数和(自身を除く): 157879120

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 26, 28, 35, 40, 49, 52, 56, 65, 70, 80, 91, 98, 104, 112, 130, 140, 182, 196, 208, 229, 245, 260, 280, 343, 364, 392, 455, 458, 490, 520, 560, 637, 686, 728, 784, 910, 916, 980, 1040, 1145, 1274, 1372, 1456, 1603, 1715, 1820, 1832, 1960, 2290, 2548, 2744, 2977, 3185, 3206, 3430, 3640, 3664, 3920, 4459, 4580, 5096, 5488, 5954, 6370, 6412, 6860, 7280, 8015, 8918, 9160, 10192, 11221, 11908, 12740, 12824, 13720, 14885, 16030, 17836, 18320, 20839, 22295, 22442, 23816, 25480, 25648, 27440, 29770, 32060, 35672, 41678, 44590, 44884, 47632, 50960, 56105, 59540, 64120, 71344, 78547, 83356, 89180, 89768, 104195, 112210, 119080, 128240, 145873, 157094, 166712, 178360, 179536, 208390, 224420, 238160, 291746, 314188, 333424, 356720, 392735, 416780, 448840, 583492, 628376, 729365, 785470, 833560, 897680, 1021111, 1166984, 1256752, 1458730, 1570940, 1667120, 2042222, 2333968, 2917460, 3141880, 4084444, 5105555, 5834920, 6283760, 8168888, 10211110, 11669840, 16337776, 20422220, 40844440, 81688880]

約数ペア:

[(1, 81688880), (2, 40844440), (4, 20422220), (5, 16337776), (7, 11669840), (8, 10211110), (10, 8168888), (13, 6283760), (14, 5834920), (16, 5105555), (20, 4084444), (26, 3141880), (28, 2917460), (35, 2333968), (40, 2042222), (49, 1667120), (52, 1570940), (56, 1458730), (65, 1256752), (70, 1166984), (80, 1021111), (91, 897680), (98, 833560), (104, 785470), (112, 729365), (130, 628376), (140, 583492), (182, 448840), (196, 416780), (208, 392735), (229, 356720), (245, 333424), (260, 314188), (280, 291746), (343, 238160), (364, 224420), (392, 208390), (455, 179536), (458, 178360), (490, 166712), (520, 157094), (560, 145873), (637, 128240), (686, 119080), (728, 112210), (784, 104195), (910, 89768), (916, 89180), (980, 83356), (1040, 78547), (1145, 71344), (1274, 64120), (1372, 59540), (1456, 56105), (1603, 50960), (1715, 47632), (1820, 44884), (1832, 44590), (1960, 41678), (2290, 35672), (2548, 32060), (2744, 29770), (2977, 27440), (3185, 25648), (3206, 25480), (3430, 23816), (3640, 22442), (3664, 22295), (3920, 20839), (4459, 18320), (4580, 17836), (5096, 16030), (5488, 14885), (5954, 13720), (6370, 12824), (6412, 12740), (6860, 11908), (7280, 11221), (8015, 10192), (8918, 9160)]