25000220

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{283}}^1\times {\mathrm{631}}^1$

素因数の和:930

約数の個数: 48

約数和(自身を含む): 60307968

約数和(自身を除く): 35307748

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 283, 566, 631, 1132, 1262, 1415, 1981, 2524, 2830, 3155, 3962, 4417, 5660, 6310, 7924, 8834, 9905, 12620, 17668, 19810, 22085, 39620, 44170, 88340, 178573, 357146, 714292, 892865, 1250011, 1785730, 2500022, 3571460, 5000044, 6250055, 12500110, 25000220]

約数ペア:

[(1, 25000220), (2, 12500110), (4, 6250055), (5, 5000044), (7, 3571460), (10, 2500022), (14, 1785730), (20, 1250011), (28, 892865), (35, 714292), (70, 357146), (140, 178573), (283, 88340), (566, 44170), (631, 39620), (1132, 22085), (1262, 19810), (1415, 17668), (1981, 12620), (2524, 9905), (2830, 8834), (3155, 7924), (3962, 6310), (4417, 5660)]