28204490

素因数分解:

$2^1\times 5^1\times {\mathrm{103}}^1\times {\mathrm{139}}^1\times {\mathrm{197}}^1$

素因数の和:446

約数の個数: 32

約数和(自身を含む): 51891840

約数和(自身を除く): 23687350

約数列:

[1, 2, 5, 10, 103, 139, 197, 206, 278, 394, 515, 695, 985, 1030, 1390, 1970, 14317, 20291, 27383, 28634, 40582, 54766, 71585, 101455, 136915, 143170, 202910, 273830, 2820449, 5640898, 14102245, 28204490]

約数ペア:

[(1, 28204490), (2, 14102245), (5, 5640898), (10, 2820449), (103, 273830), (139, 202910), (197, 143170), (206, 136915), (278, 101455), (394, 71585), (515, 54766), (695, 40582), (985, 28634), (1030, 27383), (1390, 20291), (1970, 14317)]