72163917

素因数分解:

$3^2\times 7^2\times {\mathrm{163637}}^1$

素因数の和:163657

約数の個数: 18

約数和(自身を含む): 121255758

約数和(自身を除く): 49091841

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 163637, 490911, 1145459, 1472733, 3436377, 8018213, 10309131, 24054639, 72163917]

約数ペア:

[(1, 72163917), (3, 24054639), (7, 10309131), (9, 8018213), (21, 3436377), (49, 1472733), (63, 1145459), (147, 490911), (441, 163637)]