12811516

素因数分解:

$2^2\times {\mathrm{41}}^1\times {\mathrm{191}}^1\times {\mathrm{409}}^1$

素因数の和:645

約数の個数: 24

約数和(自身を含む): 23143680

約数和(自身を除く): 10332164

約数列:

[1, 2, 4, 41, 82, 164, 191, 382, 409, 764, 818, 1636, 7831, 15662, 16769, 31324, 33538, 67076, 78119, 156238, 312476, 3202879, 6405758, 12811516]

約数ペア:

[(1, 12811516), (2, 6405758), (4, 3202879), (41, 312476), (82, 156238), (164, 78119), (191, 67076), (382, 33538), (409, 31324), (764, 16769), (818, 15662), (1636, 7831)]