72172840

素因数分解:

$2^3\times 5^1\times {\mathrm{1804321}}^1$

素因数の和:1804332

約数の個数: 16

約数和(自身を含む): 162388980

約数和(自身を除く): 90216140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1804321, 3608642, 7217284, 9021605, 14434568, 18043210, 36086420, 72172840]

約数ペア:

[(1, 72172840), (2, 36086420), (4, 18043210), (5, 14434568), (8, 9021605), (10, 7217284), (20, 3608642), (40, 1804321)]