28709200

素因数分解:

$2^4\times 5^2\times {\mathrm{13}}^1\times {\mathrm{5521}}^1$

素因数の和:5552

約数の個数: 60

約数和(自身を含む): 74292988

約数和(自身を除く): 45583788

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 40, 50, 52, 65, 80, 100, 104, 130, 200, 208, 260, 325, 400, 520, 650, 1040, 1300, 2600, 5200, 5521, 11042, 22084, 27605, 44168, 55210, 71773, 88336, 110420, 138025, 143546, 220840, 276050, 287092, 358865, 441680, 552100, 574184, 717730, 1104200, 1148368, 1435460, 1794325, 2208400, 2870920, 3588650, 5741840, 7177300, 14354600, 28709200]

約数ペア:

[(1, 28709200), (2, 14354600), (4, 7177300), (5, 5741840), (8, 3588650), (10, 2870920), (13, 2208400), (16, 1794325), (20, 1435460), (25, 1148368), (26, 1104200), (40, 717730), (50, 574184), (52, 552100), (65, 441680), (80, 358865), (100, 287092), (104, 276050), (130, 220840), (200, 143546), (208, 138025), (260, 110420), (325, 88336), (400, 71773), (520, 55210), (650, 44168), (1040, 27605), (1300, 22084), (2600, 11042), (5200, 5521)]