21156556918

素因数分解:

$2^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{4243}}^1\times {\mathrm{11489}}^1$

素因数の和:15772

約数の個数: 32

約数和(自身を含む): 37450414080

約数和(自身を除く): 16293857162

約数列:

[1, 2, 7, 14, 31, 62, 217, 434, 4243, 8486, 11489, 22978, 29701, 59402, 80423, 131533, 160846, 263066, 356159, 712318, 920731, 1841462, 2493113, 4986226, 48747827, 97495654, 341234789, 682469578, 1511182637, 3022365274, 10578278459, 21156556918]

約数ペア:

[(1, 21156556918), (2, 10578278459), (7, 3022365274), (14, 1511182637), (31, 682469578), (62, 341234789), (217, 97495654), (434, 48747827), (4243, 4986226), (8486, 2493113), (11489, 1841462), (22978, 920731), (29701, 712318), (59402, 356159), (80423, 263066), (131533, 160846)]