318042640

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{257}}^1\times {\mathrm{499}}^1$

素因数の和:800

約数の個数: 80

約数和(自身を含む): 767808000

約数和(自身を除く): 449765360

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 257, 310, 496, 499, 514, 620, 998, 1028, 1240, 1285, 1996, 2056, 2480, 2495, 2570, 3992, 4112, 4990, 5140, 7967, 7984, 9980, 10280, 15469, 15934, 19960, 20560, 30938, 31868, 39835, 39920, 61876, 63736, 77345, 79670, 123752, 127472, 128243, 154690, 159340, 247504, 256486, 309380, 318680, 512972, 618760, 637360, 641215, 1025944, 1237520, 1282430, 2051888, 2564860, 3975533, 5129720, 7951066, 10259440, 15902132, 19877665, 31804264, 39755330, 63608528, 79510660, 159021320, 318042640]

約数ペア:

[(1, 318042640), (2, 159021320), (4, 79510660), (5, 63608528), (8, 39755330), (10, 31804264), (16, 19877665), (20, 15902132), (31, 10259440), (40, 7951066), (62, 5129720), (80, 3975533), (124, 2564860), (155, 2051888), (248, 1282430), (257, 1237520), (310, 1025944), (496, 641215), (499, 637360), (514, 618760), (620, 512972), (998, 318680), (1028, 309380), (1240, 256486), (1285, 247504), (1996, 159340), (2056, 154690), (2480, 128243), (2495, 127472), (2570, 123752), (3992, 79670), (4112, 77345), (4990, 63736), (5140, 61876), (7967, 39920), (7984, 39835), (9980, 31868), (10280, 30938), (15469, 20560), (15934, 19960)]