25884920

素因数分解:

$2^3\times 5^1\times {\mathrm{653}}^1\times {\mathrm{991}}^1$

素因数の和:1655

約数の個数: 32

約数和(自身を含む): 58389120

約数和(自身を除く): 32504200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 653, 991, 1306, 1982, 2612, 3265, 3964, 4955, 5224, 6530, 7928, 9910, 13060, 19820, 26120, 39640, 647123, 1294246, 2588492, 3235615, 5176984, 6471230, 12942460, 25884920]

約数ペア:

[(1, 25884920), (2, 12942460), (4, 6471230), (5, 5176984), (8, 3235615), (10, 2588492), (20, 1294246), (40, 647123), (653, 39640), (991, 26120), (1306, 19820), (1982, 13060), (2612, 9910), (3265, 7928), (3964, 6530), (4955, 5224)]