215174720

素因数分解:

$2^6\times 5^1\times {\mathrm{31}}^1\times {\mathrm{109}}^1\times {\mathrm{199}}^1$

素因数の和:356

約数の個数: 112

約数和(自身を含む): 536448000

約数和(自身を除く): 321273280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 109, 124, 155, 160, 199, 218, 248, 310, 320, 398, 436, 496, 545, 620, 796, 872, 992, 995, 1090, 1240, 1592, 1744, 1984, 1990, 2180, 2480, 3184, 3379, 3488, 3980, 4360, 4960, 6169, 6368, 6758, 6976, 7960, 8720, 9920, 12338, 12736, 13516, 15920, 16895, 17440, 21691, 24676, 27032, 30845, 31840, 33790, 34880, 43382, 49352, 54064, 61690, 63680, 67580, 86764, 98704, 108128, 108455, 123380, 135160, 173528, 197408, 216256, 216910, 246760, 270320, 347056, 394816, 433820, 493520, 540640, 672421, 694112, 867640, 987040, 1081280, 1344842, 1388224, 1735280, 1974080, 2689684, 3362105, 3470560, 5379368, 6724210, 6941120, 10758736, 13448420, 21517472, 26896840, 43034944, 53793680, 107587360, 215174720]

約数ペア:

[(1, 215174720), (2, 107587360), (4, 53793680), (5, 43034944), (8, 26896840), (10, 21517472), (16, 13448420), (20, 10758736), (31, 6941120), (32, 6724210), (40, 5379368), (62, 3470560), (64, 3362105), (80, 2689684), (109, 1974080), (124, 1735280), (155, 1388224), (160, 1344842), (199, 1081280), (218, 987040), (248, 867640), (310, 694112), (320, 672421), (398, 540640), (436, 493520), (496, 433820), (545, 394816), (620, 347056), (796, 270320), (872, 246760), (992, 216910), (995, 216256), (1090, 197408), (1240, 173528), (1592, 135160), (1744, 123380), (1984, 108455), (1990, 108128), (2180, 98704), (2480, 86764), (3184, 67580), (3379, 63680), (3488, 61690), (3980, 54064), (4360, 49352), (4960, 43382), (6169, 34880), (6368, 33790), (6758, 31840), (6976, 30845), (7960, 27032), (8720, 24676), (9920, 21691), (12338, 17440), (12736, 16895), (13516, 15920)]