28171000

素因数分解:

$2^3\times 5^3\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{197}}^1$

素因数の和:242

約数の個数: 128

約数和(自身を含む): 77837760

約数和(自身を除く): 49666760

約数列:

[1, 2, 4, 5, 8, 10, 11, 13, 20, 22, 25, 26, 40, 44, 50, 52, 55, 65, 88, 100, 104, 110, 125, 130, 143, 197, 200, 220, 250, 260, 275, 286, 325, 394, 440, 500, 520, 550, 572, 650, 715, 788, 985, 1000, 1100, 1144, 1300, 1375, 1430, 1576, 1625, 1970, 2167, 2200, 2561, 2600, 2750, 2860, 3250, 3575, 3940, 4334, 4925, 5122, 5500, 5720, 6500, 7150, 7880, 8668, 9850, 10244, 10835, 11000, 12805, 13000, 14300, 17336, 17875, 19700, 20488, 21670, 24625, 25610, 28171, 28600, 35750, 39400, 43340, 49250, 51220, 54175, 56342, 64025, 71500, 86680, 98500, 102440, 108350, 112684, 128050, 140855, 143000, 197000, 216700, 225368, 256100, 270875, 281710, 320125, 433400, 512200, 541750, 563420, 640250, 704275, 1083500, 1126840, 1280500, 1408550, 2167000, 2561000, 2817100, 3521375, 5634200, 7042750, 14085500, 28171000]

約数ペア:

[(1, 28171000), (2, 14085500), (4, 7042750), (5, 5634200), (8, 3521375), (10, 2817100), (11, 2561000), (13, 2167000), (20, 1408550), (22, 1280500), (25, 1126840), (26, 1083500), (40, 704275), (44, 640250), (50, 563420), (52, 541750), (55, 512200), (65, 433400), (88, 320125), (100, 281710), (104, 270875), (110, 256100), (125, 225368), (130, 216700), (143, 197000), (197, 143000), (200, 140855), (220, 128050), (250, 112684), (260, 108350), (275, 102440), (286, 98500), (325, 86680), (394, 71500), (440, 64025), (500, 56342), (520, 54175), (550, 51220), (572, 49250), (650, 43340), (715, 39400), (788, 35750), (985, 28600), (1000, 28171), (1100, 25610), (1144, 24625), (1300, 21670), (1375, 20488), (1430, 19700), (1576, 17875), (1625, 17336), (1970, 14300), (2167, 13000), (2200, 12805), (2561, 11000), (2600, 10835), (2750, 10244), (2860, 9850), (3250, 8668), (3575, 7880), (3940, 7150), (4334, 6500), (4925, 5720), (5122, 5500)]