168391340

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{647659}}^1$

素因数の和:647681

約数の個数: 24

約数和(自身を含む): 380824080

約数和(自身を除く): 212432740

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 647659, 1295318, 2590636, 3238295, 6476590, 8419567, 12953180, 16839134, 33678268, 42097835, 84195670, 168391340]

約数ペア:

[(1, 168391340), (2, 84195670), (4, 42097835), (5, 33678268), (10, 16839134), (13, 12953180), (20, 8419567), (26, 6476590), (52, 3238295), (65, 2590636), (130, 1295318), (260, 647659)]