19975850

素因数分解:

$2^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{331}}^1$

素因数の和:431

約数の個数: 48

約数和(自身を含む): 40015296

約数和(自身を除く): 20039446

約数列:

[1, 2, 5, 10, 17, 25, 34, 50, 71, 85, 142, 170, 331, 355, 425, 662, 710, 850, 1207, 1655, 1775, 2414, 3310, 3550, 5627, 6035, 8275, 11254, 12070, 16550, 23501, 28135, 30175, 47002, 56270, 60350, 117505, 140675, 235010, 281350, 399517, 587525, 799034, 1175050, 1997585, 3995170, 9987925, 19975850]

約数ペア:

[(1, 19975850), (2, 9987925), (5, 3995170), (10, 1997585), (17, 1175050), (25, 799034), (34, 587525), (50, 399517), (71, 281350), (85, 235010), (142, 140675), (170, 117505), (331, 60350), (355, 56270), (425, 47002), (662, 30175), (710, 28135), (850, 23501), (1207, 16550), (1655, 12070), (1775, 11254), (2414, 8275), (3310, 6035), (3550, 5627)]