81559600

素因数分解:

$2^4\times 5^2\times {\mathrm{29}}^1\times {\mathrm{79}}^1\times {\mathrm{89}}^1$

素因数の和:215

約数の個数: 120

約数和(自身を含む): 207576000

約数和(自身を除く): 126016400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 29, 40, 50, 58, 79, 80, 89, 100, 116, 145, 158, 178, 200, 232, 290, 316, 356, 395, 400, 445, 464, 580, 632, 712, 725, 790, 890, 1160, 1264, 1424, 1450, 1580, 1780, 1975, 2225, 2291, 2320, 2581, 2900, 3160, 3560, 3950, 4450, 4582, 5162, 5800, 6320, 7031, 7120, 7900, 8900, 9164, 10324, 11455, 11600, 12905, 14062, 15800, 17800, 18328, 20648, 22910, 25810, 28124, 31600, 35155, 35600, 36656, 41296, 45820, 51620, 56248, 57275, 64525, 70310, 91640, 103240, 112496, 114550, 129050, 140620, 175775, 183280, 203899, 206480, 229100, 258100, 281240, 351550, 407798, 458200, 516200, 562480, 703100, 815596, 916400, 1019495, 1032400, 1406200, 1631192, 2038990, 2812400, 3262384, 4077980, 5097475, 8155960, 10194950, 16311920, 20389900, 40779800, 81559600]

約数ペア:

[(1, 81559600), (2, 40779800), (4, 20389900), (5, 16311920), (8, 10194950), (10, 8155960), (16, 5097475), (20, 4077980), (25, 3262384), (29, 2812400), (40, 2038990), (50, 1631192), (58, 1406200), (79, 1032400), (80, 1019495), (89, 916400), (100, 815596), (116, 703100), (145, 562480), (158, 516200), (178, 458200), (200, 407798), (232, 351550), (290, 281240), (316, 258100), (356, 229100), (395, 206480), (400, 203899), (445, 183280), (464, 175775), (580, 140620), (632, 129050), (712, 114550), (725, 112496), (790, 103240), (890, 91640), (1160, 70310), (1264, 64525), (1424, 57275), (1450, 56248), (1580, 51620), (1780, 45820), (1975, 41296), (2225, 36656), (2291, 35600), (2320, 35155), (2581, 31600), (2900, 28124), (3160, 25810), (3560, 22910), (3950, 20648), (4450, 18328), (4582, 17800), (5162, 15800), (5800, 14062), (6320, 12905), (7031, 11600), (7120, 11455), (7900, 10324), (8900, 9164)]