31391180

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^2\times {\mathrm{5431}}^1$

素因数の和:5474

約数の個数: 36

約数和(自身を含む): 70040208

約数和(自身を除く): 38649028

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 289, 340, 578, 1156, 1445, 2890, 5431, 5780, 10862, 21724, 27155, 54310, 92327, 108620, 184654, 369308, 461635, 923270, 1569559, 1846540, 3139118, 6278236, 7847795, 15695590, 31391180]

約数ペア:

[(1, 31391180), (2, 15695590), (4, 7847795), (5, 6278236), (10, 3139118), (17, 1846540), (20, 1569559), (34, 923270), (68, 461635), (85, 369308), (170, 184654), (289, 108620), (340, 92327), (578, 54310), (1156, 27155), (1445, 21724), (2890, 10862), (5431, 5780)]