16591975

素因数分解:

$5^2\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{271}}^1$

素因数の和:391

約数の個数: 24

約数和(自身を含む): 21585920

約数和(自身を除く): 4993945

約数列:

[1, 5, 25, 31, 79, 155, 271, 395, 775, 1355, 1975, 2449, 6775, 8401, 12245, 21409, 42005, 61225, 107045, 210025, 535225, 663679, 3318395, 16591975]

約数ペア:

[(1, 16591975), (5, 3318395), (25, 663679), (31, 535225), (79, 210025), (155, 107045), (271, 61225), (395, 42005), (775, 21409), (1355, 12245), (1975, 8401), (2449, 6775)]