25385420

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{197}}^1\times {\mathrm{379}}^1$

素因数の和:602

約数の個数: 48

約数和(自身を含む): 56881440

約数和(自身を除く): 31496020

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 197, 340, 379, 394, 758, 788, 985, 1516, 1895, 1970, 3349, 3790, 3940, 6443, 6698, 7580, 12886, 13396, 16745, 25772, 32215, 33490, 64430, 66980, 74663, 128860, 149326, 298652, 373315, 746630, 1269271, 1493260, 2538542, 5077084, 6346355, 12692710, 25385420]

約数ペア:

[(1, 25385420), (2, 12692710), (4, 6346355), (5, 5077084), (10, 2538542), (17, 1493260), (20, 1269271), (34, 746630), (68, 373315), (85, 298652), (170, 149326), (197, 128860), (340, 74663), (379, 66980), (394, 64430), (758, 33490), (788, 32215), (985, 25772), (1516, 16745), (1895, 13396), (1970, 12886), (3349, 7580), (3790, 6698), (3940, 6443)]