21515310

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{3919}}^1$

素因数の和:3993

約数の個数: 48

約数和(自身を含む): 56871360

約数和(自身を除く): 35356050

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 61, 90, 122, 183, 305, 366, 549, 610, 915, 1098, 1830, 2745, 3919, 5490, 7838, 11757, 19595, 23514, 35271, 39190, 58785, 70542, 117570, 176355, 239059, 352710, 478118, 717177, 1195295, 1434354, 2151531, 2390590, 3585885, 4303062, 7171770, 10757655, 21515310]

約数ペア:

[(1, 21515310), (2, 10757655), (3, 7171770), (5, 4303062), (6, 3585885), (9, 2390590), (10, 2151531), (15, 1434354), (18, 1195295), (30, 717177), (45, 478118), (61, 352710), (90, 239059), (122, 176355), (183, 117570), (305, 70542), (366, 58785), (549, 39190), (610, 35271), (915, 23514), (1098, 19595), (1830, 11757), (2745, 7838), (3919, 5490)]