18647740

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{1583}}^1$

素因数の和:1642

約数の個数: 48

約数和(自身を含む): 42577920

約数和(自身を除く): 23930180

約数列:

[1, 2, 4, 5, 10, 19, 20, 31, 38, 62, 76, 95, 124, 155, 190, 310, 380, 589, 620, 1178, 1583, 2356, 2945, 3166, 5890, 6332, 7915, 11780, 15830, 30077, 31660, 49073, 60154, 98146, 120308, 150385, 196292, 245365, 300770, 490730, 601540, 932387, 981460, 1864774, 3729548, 4661935, 9323870, 18647740]

約数ペア:

[(1, 18647740), (2, 9323870), (4, 4661935), (5, 3729548), (10, 1864774), (19, 981460), (20, 932387), (31, 601540), (38, 490730), (62, 300770), (76, 245365), (95, 196292), (124, 150385), (155, 120308), (190, 98146), (310, 60154), (380, 49073), (589, 31660), (620, 30077), (1178, 15830), (1583, 11780), (2356, 7915), (2945, 6332), (3166, 5890)]