31081780

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{113}}^1\times {\mathrm{809}}^1$

素因数の和:948

約数の個数: 48

約数和(自身を含む): 69809040

約数和(自身を除く): 38727260

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 113, 170, 226, 340, 452, 565, 809, 1130, 1618, 1921, 2260, 3236, 3842, 4045, 7684, 8090, 9605, 13753, 16180, 19210, 27506, 38420, 55012, 68765, 91417, 137530, 182834, 275060, 365668, 457085, 914170, 1554089, 1828340, 3108178, 6216356, 7770445, 15540890, 31081780]

約数ペア:

[(1, 31081780), (2, 15540890), (4, 7770445), (5, 6216356), (10, 3108178), (17, 1828340), (20, 1554089), (34, 914170), (68, 457085), (85, 365668), (113, 275060), (170, 182834), (226, 137530), (340, 91417), (452, 68765), (565, 55012), (809, 38420), (1130, 27506), (1618, 19210), (1921, 16180), (2260, 13753), (3236, 9605), (3842, 8090), (4045, 7684)]