72041720

素因数分解:

$2^3\times 5^1\times {\mathrm{643}}^1\times {\mathrm{2801}}^1$

素因数の和:3455

約数の個数: 32

約数和(自身を含む): 162403920

約数和(自身を除く): 90362200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 643, 1286, 2572, 2801, 3215, 5144, 5602, 6430, 11204, 12860, 14005, 22408, 25720, 28010, 56020, 112040, 1801043, 3602086, 7204172, 9005215, 14408344, 18010430, 36020860, 72041720]

約数ペア:

[(1, 72041720), (2, 36020860), (4, 18010430), (5, 14408344), (8, 9005215), (10, 7204172), (20, 3602086), (40, 1801043), (643, 112040), (1286, 56020), (2572, 28010), (2801, 25720), (3215, 22408), (5144, 14005), (5602, 12860), (6430, 11204)]