28391000

素因数分解:

$2^3\times 5^3\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{89}}^1$

素因数の和:150

約数の個数: 128

約数和(自身を含む): 75816000

約数和(自身を除く): 47425000

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 25, 29, 40, 44, 50, 55, 58, 88, 89, 100, 110, 116, 125, 145, 178, 200, 220, 232, 250, 275, 290, 319, 356, 440, 445, 500, 550, 580, 638, 712, 725, 890, 979, 1000, 1100, 1160, 1276, 1375, 1450, 1595, 1780, 1958, 2200, 2225, 2552, 2581, 2750, 2900, 3190, 3560, 3625, 3916, 4450, 4895, 5162, 5500, 5800, 6380, 7250, 7832, 7975, 8900, 9790, 10324, 11000, 11125, 12760, 12905, 14500, 15950, 17800, 19580, 20648, 22250, 24475, 25810, 28391, 29000, 31900, 39160, 39875, 44500, 48950, 51620, 56782, 63800, 64525, 79750, 89000, 97900, 103240, 113564, 122375, 129050, 141955, 159500, 195800, 227128, 244750, 258100, 283910, 319000, 322625, 489500, 516200, 567820, 645250, 709775, 979000, 1135640, 1290500, 1419550, 2581000, 2839100, 3548875, 5678200, 7097750, 14195500, 28391000]

約数ペア:

[(1, 28391000), (2, 14195500), (4, 7097750), (5, 5678200), (8, 3548875), (10, 2839100), (11, 2581000), (20, 1419550), (22, 1290500), (25, 1135640), (29, 979000), (40, 709775), (44, 645250), (50, 567820), (55, 516200), (58, 489500), (88, 322625), (89, 319000), (100, 283910), (110, 258100), (116, 244750), (125, 227128), (145, 195800), (178, 159500), (200, 141955), (220, 129050), (232, 122375), (250, 113564), (275, 103240), (290, 97900), (319, 89000), (356, 79750), (440, 64525), (445, 63800), (500, 56782), (550, 51620), (580, 48950), (638, 44500), (712, 39875), (725, 39160), (890, 31900), (979, 29000), (1000, 28391), (1100, 25810), (1160, 24475), (1276, 22250), (1375, 20648), (1450, 19580), (1595, 17800), (1780, 15950), (1958, 14500), (2200, 12905), (2225, 12760), (2552, 11125), (2581, 11000), (2750, 10324), (2900, 9790), (3190, 8900), (3560, 7975), (3625, 7832), (3916, 7250), (4450, 6380), (4895, 5800), (5162, 5500)]