21902925

素因数分解:

$3^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{139}}^1\times {\mathrm{191}}^1$

素因数の和:354

約数の個数: 48

約数和(自身を含む): 39997440

約数和(自身を除く): 18094515

約数列:

[1, 3, 5, 11, 15, 25, 33, 55, 75, 139, 165, 191, 275, 417, 573, 695, 825, 955, 1529, 2085, 2101, 2865, 3475, 4587, 4775, 6303, 7645, 10425, 10505, 14325, 22935, 26549, 31515, 38225, 52525, 79647, 114675, 132745, 157575, 292039, 398235, 663725, 876117, 1460195, 1991175, 4380585, 7300975, 21902925]

約数ペア:

[(1, 21902925), (3, 7300975), (5, 4380585), (11, 1991175), (15, 1460195), (25, 876117), (33, 663725), (55, 398235), (75, 292039), (139, 157575), (165, 132745), (191, 114675), (275, 79647), (417, 52525), (573, 38225), (695, 31515), (825, 26549), (955, 22935), (1529, 14325), (2085, 10505), (2101, 10425), (2865, 7645), (3475, 6303), (4587, 4775)]