25421487

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^3\times {\mathrm{19}}^1\times {\mathrm{29}}^1$

素因数の和:97

約数の個数: 64

約数和(自身を含む): 45696000

約数和(自身を除く): 20274513

約数列:

[1, 3, 7, 13, 19, 21, 29, 39, 57, 87, 91, 133, 169, 203, 247, 273, 377, 399, 507, 551, 609, 741, 1131, 1183, 1653, 1729, 2197, 2639, 3211, 3549, 3857, 4901, 5187, 6591, 7163, 7917, 9633, 11571, 14703, 15379, 21489, 22477, 34307, 41743, 46137, 50141, 63713, 67431, 93119, 102921, 125229, 150423, 191139, 279357, 292201, 445991, 651833, 876603, 1210547, 1337973, 1955499, 3631641, 8473829, 25421487]

約数ペア:

[(1, 25421487), (3, 8473829), (7, 3631641), (13, 1955499), (19, 1337973), (21, 1210547), (29, 876603), (39, 651833), (57, 445991), (87, 292201), (91, 279357), (133, 191139), (169, 150423), (203, 125229), (247, 102921), (273, 93119), (377, 67431), (399, 63713), (507, 50141), (551, 46137), (609, 41743), (741, 34307), (1131, 22477), (1183, 21489), (1653, 15379), (1729, 14703), (2197, 11571), (2639, 9633), (3211, 7917), (3549, 7163), (3857, 6591), (4901, 5187)]