2009057920

素因数分解:

$2^7\times 5^1\times {\mathrm{31}}^1\times {\mathrm{131}}^1\times {\mathrm{773}}^1$

素因数の和:954

約数の個数: 128

約数和(自身を含む): 5002145280

約数和(自身を除く): 2993087360

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 131, 155, 160, 248, 262, 310, 320, 496, 524, 620, 640, 655, 773, 992, 1048, 1240, 1310, 1546, 1984, 2096, 2480, 2620, 3092, 3865, 3968, 4061, 4192, 4960, 5240, 6184, 7730, 8122, 8384, 9920, 10480, 12368, 15460, 16244, 16768, 19840, 20305, 20960, 23963, 24736, 30920, 32488, 40610, 41920, 47926, 49472, 61840, 64976, 81220, 83840, 95852, 98944, 101263, 119815, 123680, 129952, 162440, 191704, 202526, 239630, 247360, 259904, 324880, 383408, 405052, 479260, 494720, 506315, 519808, 649760, 766816, 810104, 958520, 1012630, 1299520, 1533632, 1620208, 1917040, 2025260, 2599040, 3067264, 3139153, 3240416, 3834080, 4050520, 6278306, 6480832, 7668160, 8101040, 12556612, 12961664, 15336320, 15695765, 16202080, 25113224, 31391530, 32404160, 50226448, 62783060, 64808320, 100452896, 125566120, 200905792, 251132240, 401811584, 502264480, 1004528960, 2009057920]

約数ペア:

[(1, 2009057920), (2, 1004528960), (4, 502264480), (5, 401811584), (8, 251132240), (10, 200905792), (16, 125566120), (20, 100452896), (31, 64808320), (32, 62783060), (40, 50226448), (62, 32404160), (64, 31391530), (80, 25113224), (124, 16202080), (128, 15695765), (131, 15336320), (155, 12961664), (160, 12556612), (248, 8101040), (262, 7668160), (310, 6480832), (320, 6278306), (496, 4050520), (524, 3834080), (620, 3240416), (640, 3139153), (655, 3067264), (773, 2599040), (992, 2025260), (1048, 1917040), (1240, 1620208), (1310, 1533632), (1546, 1299520), (1984, 1012630), (2096, 958520), (2480, 810104), (2620, 766816), (3092, 649760), (3865, 519808), (3968, 506315), (4061, 494720), (4192, 479260), (4960, 405052), (5240, 383408), (6184, 324880), (7730, 259904), (8122, 247360), (8384, 239630), (9920, 202526), (10480, 191704), (12368, 162440), (15460, 129952), (16244, 123680), (16768, 119815), (19840, 101263), (20305, 98944), (20960, 95852), (23963, 83840), (24736, 81220), (30920, 64976), (32488, 61840), (40610, 49472), (41920, 47926)]