21045578

素因数分解:

$2^1\times {\mathrm{19}}^2\times {\mathrm{103}}^1\times {\mathrm{283}}^1$

素因数の和:426

約数の個数: 24

約数和(自身を含む): 33759648

約数和(自身を除く): 12714070

約数列:

[1, 2, 19, 38, 103, 206, 283, 361, 566, 722, 1957, 3914, 5377, 10754, 29149, 37183, 58298, 74366, 102163, 204326, 553831, 1107662, 10522789, 21045578]

約数ペア:

[(1, 21045578), (2, 10522789), (19, 1107662), (38, 553831), (103, 204326), (206, 102163), (283, 74366), (361, 58298), (566, 37183), (722, 29149), (1957, 10754), (3914, 5377)]