278902

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{631}}^1$

素因数の和:663

約数の個数: 16

約数和(自身を含む): 477792

約数和(自身を除く): 198890

約数列:

[1, 2, 13, 17, 26, 34, 221, 442, 631, 1262, 8203, 10727, 16406, 21454, 139451, 278902]

約数ペア:

[(1, 278902), (2, 139451), (13, 21454), (17, 16406), (26, 10727), (34, 8203), (221, 1262), (442, 631)]