71978140

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{276839}}^1$

素因数の和:276861

約数の個数: 24

約数和(自身を含む): 162781920

約数和(自身を除く): 90803780

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 276839, 553678, 1107356, 1384195, 2768390, 3598907, 5536780, 7197814, 14395628, 17994535, 35989070, 71978140]

約数ペア:

[(1, 71978140), (2, 35989070), (4, 17994535), (5, 14395628), (10, 7197814), (13, 5536780), (20, 3598907), (26, 2768390), (52, 1384195), (65, 1107356), (130, 553678), (260, 276839)]