81337900

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{131}}^1\times {\mathrm{887}}^1$

素因数の和:1039

約数の個数: 72

約数和(自身を含む): 203486976

約数和(自身を除く): 122149076

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 50, 70, 100, 131, 140, 175, 262, 350, 524, 655, 700, 887, 917, 1310, 1774, 1834, 2620, 3275, 3548, 3668, 4435, 4585, 6209, 6550, 8870, 9170, 12418, 13100, 17740, 18340, 22175, 22925, 24836, 31045, 44350, 45850, 62090, 88700, 91700, 116197, 124180, 155225, 232394, 310450, 464788, 580985, 620900, 813379, 1161970, 1626758, 2323940, 2904925, 3253516, 4066895, 5809850, 8133790, 11619700, 16267580, 20334475, 40668950, 81337900]

約数ペア:

[(1, 81337900), (2, 40668950), (4, 20334475), (5, 16267580), (7, 11619700), (10, 8133790), (14, 5809850), (20, 4066895), (25, 3253516), (28, 2904925), (35, 2323940), (50, 1626758), (70, 1161970), (100, 813379), (131, 620900), (140, 580985), (175, 464788), (262, 310450), (350, 232394), (524, 155225), (655, 124180), (700, 116197), (887, 91700), (917, 88700), (1310, 62090), (1774, 45850), (1834, 44350), (2620, 31045), (3275, 24836), (3548, 22925), (3668, 22175), (4435, 18340), (4585, 17740), (6209, 13100), (6550, 12418), (8870, 9170)]