25558780

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{197}}^1\times {\mathrm{499}}^1$

素因数の和:718

約数の個数: 48

約数和(自身を含む): 58212000

約数和(自身を除く): 32653220

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 197, 260, 394, 499, 788, 985, 998, 1970, 1996, 2495, 2561, 3940, 4990, 5122, 6487, 9980, 10244, 12805, 12974, 25610, 25948, 32435, 51220, 64870, 98303, 129740, 196606, 393212, 491515, 983030, 1277939, 1966060, 2555878, 5111756, 6389695, 12779390, 25558780]

約数ペア:

[(1, 25558780), (2, 12779390), (4, 6389695), (5, 5111756), (10, 2555878), (13, 1966060), (20, 1277939), (26, 983030), (52, 491515), (65, 393212), (130, 196606), (197, 129740), (260, 98303), (394, 64870), (499, 51220), (788, 32435), (985, 25948), (998, 25610), (1970, 12974), (1996, 12805), (2495, 10244), (2561, 9980), (3940, 6487), (4990, 5122)]