247821440

素因数分解:

$2^7\times 5^1\times {\mathrm{31}}^1\times {\mathrm{12491}}^1$

素因数の和:12541

約数の個数: 64

約数和(自身を含む): 611608320

約数和(自身を除く): 363786880

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 248, 310, 320, 496, 620, 640, 992, 1240, 1984, 2480, 3968, 4960, 9920, 12491, 19840, 24982, 49964, 62455, 99928, 124910, 199856, 249820, 387221, 399712, 499640, 774442, 799424, 999280, 1548884, 1598848, 1936105, 1998560, 3097768, 3872210, 3997120, 6195536, 7744420, 7994240, 12391072, 15488840, 24782144, 30977680, 49564288, 61955360, 123910720, 247821440]

約数ペア:

[(1, 247821440), (2, 123910720), (4, 61955360), (5, 49564288), (8, 30977680), (10, 24782144), (16, 15488840), (20, 12391072), (31, 7994240), (32, 7744420), (40, 6195536), (62, 3997120), (64, 3872210), (80, 3097768), (124, 1998560), (128, 1936105), (155, 1598848), (160, 1548884), (248, 999280), (310, 799424), (320, 774442), (496, 499640), (620, 399712), (640, 387221), (992, 249820), (1240, 199856), (1984, 124910), (2480, 99928), (3968, 62455), (4960, 49964), (9920, 24982), (12491, 19840)]