31897450

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{1583}}^1$

素因数の和:1639

約数の個数: 48

約数和(自身を含む): 65995776

約数和(自身を除く): 34098326

約数列:

[1, 2, 5, 10, 13, 25, 26, 31, 50, 62, 65, 130, 155, 310, 325, 403, 650, 775, 806, 1550, 1583, 2015, 3166, 4030, 7915, 10075, 15830, 20150, 20579, 39575, 41158, 49073, 79150, 98146, 102895, 205790, 245365, 490730, 514475, 637949, 1028950, 1226825, 1275898, 2453650, 3189745, 6379490, 15948725, 31897450]

約数ペア:

[(1, 31897450), (2, 15948725), (5, 6379490), (10, 3189745), (13, 2453650), (25, 1275898), (26, 1226825), (31, 1028950), (50, 637949), (62, 514475), (65, 490730), (130, 245365), (155, 205790), (310, 102895), (325, 98146), (403, 79150), (650, 49073), (775, 41158), (806, 39575), (1550, 20579), (1583, 20150), (2015, 15830), (3166, 10075), (4030, 7915)]