25211720

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{15373}}^1$

素因数の和:15425

約数の個数: 32

約数和(自身を含む): 58113720

約数和(自身を除く): 32902000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 15373, 30746, 61492, 76865, 122984, 153730, 307460, 614920, 630293, 1260586, 2521172, 3151465, 5042344, 6302930, 12605860, 25211720]

約数ペア:

[(1, 25211720), (2, 12605860), (4, 6302930), (5, 5042344), (8, 3151465), (10, 2521172), (20, 1260586), (40, 630293), (41, 614920), (82, 307460), (164, 153730), (205, 122984), (328, 76865), (410, 61492), (820, 30746), (1640, 15373)]