19802406

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^2\times {\mathrm{59}}^1\times {\mathrm{331}}^1$

素因数の和:421

約数の個数: 48

約数和(自身を含む): 43744320

約数和(自身を除く): 23941914

約数列:

[1, 2, 3, 6, 13, 26, 39, 59, 78, 118, 169, 177, 331, 338, 354, 507, 662, 767, 993, 1014, 1534, 1986, 2301, 4303, 4602, 8606, 9971, 12909, 19529, 19942, 25818, 29913, 39058, 55939, 58587, 59826, 111878, 117174, 167817, 253877, 335634, 507754, 761631, 1523262, 3300401, 6600802, 9901203, 19802406]

約数ペア:

[(1, 19802406), (2, 9901203), (3, 6600802), (6, 3300401), (13, 1523262), (26, 761631), (39, 507754), (59, 335634), (78, 253877), (118, 167817), (169, 117174), (177, 111878), (331, 59826), (338, 58587), (354, 55939), (507, 39058), (662, 29913), (767, 25818), (993, 19942), (1014, 19529), (1534, 12909), (1986, 9971), (2301, 8606), (4303, 4602)]