28115175

素因数分解:

$3^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{643}}^1$

素因数の和:720

約数の個数: 48

約数和(自身を含む): 51746688

約数和(自身を除く): 23631513

約数列:

[1, 3, 5, 11, 15, 25, 33, 53, 55, 75, 159, 165, 265, 275, 583, 643, 795, 825, 1325, 1749, 1929, 2915, 3215, 3975, 7073, 8745, 9645, 14575, 16075, 21219, 34079, 35365, 43725, 48225, 102237, 106095, 170395, 176825, 374869, 511185, 530475, 851975, 1124607, 1874345, 2555925, 5623035, 9371725, 28115175]

約数ペア:

[(1, 28115175), (3, 9371725), (5, 5623035), (11, 2555925), (15, 1874345), (25, 1124607), (33, 851975), (53, 530475), (55, 511185), (75, 374869), (159, 176825), (165, 170395), (265, 106095), (275, 102237), (583, 48225), (643, 43725), (795, 35365), (825, 34079), (1325, 21219), (1749, 16075), (1929, 14575), (2915, 9645), (3215, 8745), (3975, 7073)]