18609778

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{211}}^2$

素因数の和:454

約数の個数: 24

約数和(自身を含む): 32207760

約数和(自身を除く): 13597982

約数列:

[1, 2, 11, 19, 22, 38, 209, 211, 418, 422, 2321, 4009, 4642, 8018, 44099, 44521, 88198, 89042, 489731, 845899, 979462, 1691798, 9304889, 18609778]

約数ペア:

[(1, 18609778), (2, 9304889), (11, 1691798), (19, 979462), (22, 845899), (38, 489731), (209, 89042), (211, 88198), (418, 44521), (422, 44099), (2321, 8018), (4009, 4642)]