25408520

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{15493}}^1$

素因数の和:15545

約数の個数: 32

約数和(自身を含む): 58567320

約数和(自身を除く): 33158800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 15493, 30986, 61972, 77465, 123944, 154930, 309860, 619720, 635213, 1270426, 2540852, 3176065, 5081704, 6352130, 12704260, 25408520]

約数ペア:

[(1, 25408520), (2, 12704260), (4, 6352130), (5, 5081704), (8, 3176065), (10, 2540852), (20, 1270426), (40, 635213), (41, 619720), (82, 309860), (164, 154930), (205, 123944), (328, 77465), (410, 61972), (820, 30986), (1640, 15493)]