20156900

素因数分解:

$2^2\times 5^2\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{167}}^1$

素因数の和:269

約数の個数: 72

約数和(自身を含む): 47246976

約数和(自身を除く): 27090076

約数列:

[1, 2, 4, 5, 10, 17, 20, 25, 34, 50, 68, 71, 85, 100, 142, 167, 170, 284, 334, 340, 355, 425, 668, 710, 835, 850, 1207, 1420, 1670, 1700, 1775, 2414, 2839, 3340, 3550, 4175, 4828, 5678, 6035, 7100, 8350, 11356, 11857, 12070, 14195, 16700, 23714, 24140, 28390, 30175, 47428, 56780, 59285, 60350, 70975, 118570, 120700, 141950, 201569, 237140, 283900, 296425, 403138, 592850, 806276, 1007845, 1185700, 2015690, 4031380, 5039225, 10078450, 20156900]

約数ペア:

[(1, 20156900), (2, 10078450), (4, 5039225), (5, 4031380), (10, 2015690), (17, 1185700), (20, 1007845), (25, 806276), (34, 592850), (50, 403138), (68, 296425), (71, 283900), (85, 237140), (100, 201569), (142, 141950), (167, 120700), (170, 118570), (284, 70975), (334, 60350), (340, 59285), (355, 56780), (425, 47428), (668, 30175), (710, 28390), (835, 24140), (850, 23714), (1207, 16700), (1420, 14195), (1670, 12070), (1700, 11857), (1775, 11356), (2414, 8350), (2839, 7100), (3340, 6035), (3550, 5678), (4175, 4828)]