25649840

素因数分解:

$2^4\times 5^1\times {\mathrm{491}}^1\times {\mathrm{653}}^1$

素因数の和:1157

約数の個数: 40

約数和(自身を含む): 59848848

約数和(自身を除く): 34199008

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 491, 653, 982, 1306, 1964, 2455, 2612, 3265, 3928, 4910, 5224, 6530, 7856, 9820, 10448, 13060, 19640, 26120, 39280, 52240, 320623, 641246, 1282492, 1603115, 2564984, 3206230, 5129968, 6412460, 12824920, 25649840]

約数ペア:

[(1, 25649840), (2, 12824920), (4, 6412460), (5, 5129968), (8, 3206230), (10, 2564984), (16, 1603115), (20, 1282492), (40, 641246), (80, 320623), (491, 52240), (653, 39280), (982, 26120), (1306, 19640), (1964, 13060), (2455, 10448), (2612, 9820), (3265, 7856), (3928, 6530), (4910, 5224)]