31911020

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{1487}}^1$

素因数の和:1562

約数の個数: 48

約数和(自身を含む): 71245440

約数和(自身を除く): 39334420

約数列:

[1, 2, 4, 5, 10, 20, 29, 37, 58, 74, 116, 145, 148, 185, 290, 370, 580, 740, 1073, 1487, 2146, 2974, 4292, 5365, 5948, 7435, 10730, 14870, 21460, 29740, 43123, 55019, 86246, 110038, 172492, 215615, 220076, 275095, 431230, 550190, 862460, 1100380, 1595551, 3191102, 6382204, 7977755, 15955510, 31911020]

約数ペア:

[(1, 31911020), (2, 15955510), (4, 7977755), (5, 6382204), (10, 3191102), (20, 1595551), (29, 1100380), (37, 862460), (58, 550190), (74, 431230), (116, 275095), (145, 220076), (148, 215615), (185, 172492), (290, 110038), (370, 86246), (580, 55019), (740, 43123), (1073, 29740), (1487, 21460), (2146, 14870), (2974, 10730), (4292, 7435), (5365, 5948)]