28650020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{113}}^1\times {\mathrm{1811}}^1$

素因数の和:1940

約数の個数: 48

約数和(自身を含む): 69406848

約数和(自身を除く): 40756828

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 113, 140, 226, 452, 565, 791, 1130, 1582, 1811, 2260, 3164, 3622, 3955, 7244, 7910, 9055, 12677, 15820, 18110, 25354, 36220, 50708, 63385, 126770, 204643, 253540, 409286, 818572, 1023215, 1432501, 2046430, 2865002, 4092860, 5730004, 7162505, 14325010, 28650020]

約数ペア:

[(1, 28650020), (2, 14325010), (4, 7162505), (5, 5730004), (7, 4092860), (10, 2865002), (14, 2046430), (20, 1432501), (28, 1023215), (35, 818572), (70, 409286), (113, 253540), (140, 204643), (226, 126770), (452, 63385), (565, 50708), (791, 36220), (1130, 25354), (1582, 18110), (1811, 15820), (2260, 12677), (3164, 9055), (3622, 7910), (3955, 7244)]