988308640

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^2\times {\mathrm{71}}^1\times {\mathrm{719}}^1$

素因数の和:827

約数の個数: 144

約数和(自身を含む): 2606204160

約数和(自身を除く): 1617895520

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 71, 80, 88, 110, 121, 142, 160, 176, 220, 242, 284, 352, 355, 440, 484, 568, 605, 710, 719, 781, 880, 968, 1136, 1210, 1420, 1438, 1562, 1760, 1936, 2272, 2420, 2840, 2876, 3124, 3595, 3872, 3905, 4840, 5680, 5752, 6248, 7190, 7810, 7909, 8591, 9680, 11360, 11504, 12496, 14380, 15620, 15818, 17182, 19360, 23008, 24992, 28760, 31240, 31636, 34364, 39545, 42955, 51049, 57520, 62480, 63272, 68728, 79090, 85910, 86999, 102098, 115040, 124960, 126544, 137456, 158180, 171820, 173998, 204196, 253088, 255245, 274912, 316360, 343640, 347996, 408392, 434995, 510490, 561539, 632720, 687280, 695992, 816784, 869990, 1020980, 1123078, 1265440, 1374560, 1391984, 1633568, 1739980, 2041960, 2246156, 2783968, 2807695, 3479960, 4083920, 4492312, 5615390, 6176929, 6959920, 8167840, 8984624, 11230780, 12353858, 13919840, 17969248, 22461560, 24707716, 30884645, 44923120, 49415432, 61769290, 89846240, 98830864, 123538580, 197661728, 247077160, 494154320, 988308640]

約数ペア:

[(1, 988308640), (2, 494154320), (4, 247077160), (5, 197661728), (8, 123538580), (10, 98830864), (11, 89846240), (16, 61769290), (20, 49415432), (22, 44923120), (32, 30884645), (40, 24707716), (44, 22461560), (55, 17969248), (71, 13919840), (80, 12353858), (88, 11230780), (110, 8984624), (121, 8167840), (142, 6959920), (160, 6176929), (176, 5615390), (220, 4492312), (242, 4083920), (284, 3479960), (352, 2807695), (355, 2783968), (440, 2246156), (484, 2041960), (568, 1739980), (605, 1633568), (710, 1391984), (719, 1374560), (781, 1265440), (880, 1123078), (968, 1020980), (1136, 869990), (1210, 816784), (1420, 695992), (1438, 687280), (1562, 632720), (1760, 561539), (1936, 510490), (2272, 434995), (2420, 408392), (2840, 347996), (2876, 343640), (3124, 316360), (3595, 274912), (3872, 255245), (3905, 253088), (4840, 204196), (5680, 173998), (5752, 171820), (6248, 158180), (7190, 137456), (7810, 126544), (7909, 124960), (8591, 115040), (9680, 102098), (11360, 86999), (11504, 85910), (12496, 79090), (14380, 68728), (15620, 63272), (15818, 62480), (17182, 57520), (19360, 51049), (23008, 42955), (24992, 39545), (28760, 34364), (31240, 31636)]