31287140

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^2\times {\mathrm{5413}}^1$

素因数の和:5456

約数の個数: 36

約数和(自身を含む): 69808116

約数和(自身を除く): 38520976

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 289, 340, 578, 1156, 1445, 2890, 5413, 5780, 10826, 21652, 27065, 54130, 92021, 108260, 184042, 368084, 460105, 920210, 1564357, 1840420, 3128714, 6257428, 7821785, 15643570, 31287140]

約数ペア:

[(1, 31287140), (2, 15643570), (4, 7821785), (5, 6257428), (10, 3128714), (17, 1840420), (20, 1564357), (34, 920210), (68, 460105), (85, 368084), (170, 184042), (289, 108260), (340, 92021), (578, 54130), (1156, 27065), (1445, 21652), (2890, 10826), (5413, 5780)]