81919800

素因数分解:

$2^3\times 3^2\times 5^2\times {\mathrm{71}}^1\times {\mathrm{641}}^1$

素因数の和:734

約数の個数: 144

約数和(自身を含む): 279424080

約数和(自身を除く): 197504280

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 25, 30, 36, 40, 45, 50, 60, 71, 72, 75, 90, 100, 120, 142, 150, 180, 200, 213, 225, 284, 300, 355, 360, 426, 450, 568, 600, 639, 641, 710, 852, 900, 1065, 1278, 1282, 1420, 1704, 1775, 1800, 1923, 2130, 2556, 2564, 2840, 3195, 3205, 3550, 3846, 4260, 5112, 5128, 5325, 5769, 6390, 6410, 7100, 7692, 8520, 9615, 10650, 11538, 12780, 12820, 14200, 15384, 15975, 16025, 19230, 21300, 23076, 25560, 25640, 28845, 31950, 32050, 38460, 42600, 45511, 46152, 48075, 57690, 63900, 64100, 76920, 91022, 96150, 115380, 127800, 128200, 136533, 144225, 182044, 192300, 227555, 230760, 273066, 288450, 364088, 384600, 409599, 455110, 546132, 576900, 682665, 819198, 910220, 1092264, 1137775, 1153800, 1365330, 1638396, 1820440, 2047995, 2275550, 2730660, 3276792, 3413325, 4095990, 4551100, 5461320, 6826650, 8191980, 9102200, 10239975, 13653300, 16383960, 20479950, 27306600, 40959900, 81919800]

約数ペア:

[(1, 81919800), (2, 40959900), (3, 27306600), (4, 20479950), (5, 16383960), (6, 13653300), (8, 10239975), (9, 9102200), (10, 8191980), (12, 6826650), (15, 5461320), (18, 4551100), (20, 4095990), (24, 3413325), (25, 3276792), (30, 2730660), (36, 2275550), (40, 2047995), (45, 1820440), (50, 1638396), (60, 1365330), (71, 1153800), (72, 1137775), (75, 1092264), (90, 910220), (100, 819198), (120, 682665), (142, 576900), (150, 546132), (180, 455110), (200, 409599), (213, 384600), (225, 364088), (284, 288450), (300, 273066), (355, 230760), (360, 227555), (426, 192300), (450, 182044), (568, 144225), (600, 136533), (639, 128200), (641, 127800), (710, 115380), (852, 96150), (900, 91022), (1065, 76920), (1278, 64100), (1282, 63900), (1420, 57690), (1704, 48075), (1775, 46152), (1800, 45511), (1923, 42600), (2130, 38460), (2556, 32050), (2564, 31950), (2840, 28845), (3195, 25640), (3205, 25560), (3550, 23076), (3846, 21300), (4260, 19230), (5112, 16025), (5128, 15975), (5325, 15384), (5769, 14200), (6390, 12820), (6410, 12780), (7100, 11538), (7692, 10650), (8520, 9615)]