31919540

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{269}}^1\times {\mathrm{349}}^1$

素因数の和:644

約数の個数: 48

約数和(自身を含む): 71442000

約数和(自身を除く): 39522460

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 269, 340, 349, 538, 698, 1076, 1345, 1396, 1745, 2690, 3490, 4573, 5380, 5933, 6980, 9146, 11866, 18292, 22865, 23732, 29665, 45730, 59330, 91460, 93881, 118660, 187762, 375524, 469405, 938810, 1595977, 1877620, 3191954, 6383908, 7979885, 15959770, 31919540]

約数ペア:

[(1, 31919540), (2, 15959770), (4, 7979885), (5, 6383908), (10, 3191954), (17, 1877620), (20, 1595977), (34, 938810), (68, 469405), (85, 375524), (170, 187762), (269, 118660), (340, 93881), (349, 91460), (538, 59330), (698, 45730), (1076, 29665), (1345, 23732), (1396, 22865), (1745, 18292), (2690, 11866), (3490, 9146), (4573, 6980), (5380, 5933)]