251283880

素因数分解:

$2^3\times 5^1\times {\mathrm{997}}^1\times {\mathrm{6301}}^1$

素因数の和:7309

約数の個数: 32

約数和(自身を含む): 566045640

約数和(自身を除く): 314761760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 997, 1994, 3988, 4985, 6301, 7976, 9970, 12602, 19940, 25204, 31505, 39880, 50408, 63010, 126020, 252040, 6282097, 12564194, 25128388, 31410485, 50256776, 62820970, 125641940, 251283880]

約数ペア:

[(1, 251283880), (2, 125641940), (4, 62820970), (5, 50256776), (8, 31410485), (10, 25128388), (20, 12564194), (40, 6282097), (997, 252040), (1994, 126020), (3988, 63010), (4985, 50408), (6301, 39880), (7976, 31505), (9970, 25204), (12602, 19940)]