18669440

素因数分解:

$2^7\times 5^1\times {\mathrm{31}}^1\times {\mathrm{941}}^1$

素因数の和:991

約数の個数: 64

約数和(自身を含む): 46120320

約数和(自身を除く): 27450880

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, 941, 992, 1240, 1882, 1984, 2480, 3764, 3968, 4705, 4960, 7528, 9410, 9920, 15056, 18820, 19840, 29171, 30112, 37640, 58342, 60224, 75280, 116684, 120448, 145855, 150560, 233368, 291710, 301120, 466736, 583420, 602240, 933472, 1166840, 1866944, 2333680, 3733888, 4667360, 9334720, 18669440]

約数ペア:

[(1, 18669440), (2, 9334720), (4, 4667360), (5, 3733888), (8, 2333680), (10, 1866944), (16, 1166840), (20, 933472), (31, 602240), (32, 583420), (40, 466736), (62, 301120), (64, 291710), (80, 233368), (124, 150560), (128, 145855), (155, 120448), (160, 116684), (248, 75280), (310, 60224), (320, 58342), (496, 37640), (620, 30112), (640, 29171), (941, 19840), (992, 18820), (1240, 15056), (1882, 9920), (1984, 9410), (2480, 7528), (3764, 4960), (3968, 4705)]