21286668

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{136453}}^1$

素因数の和:136473

約数の個数: 24

約数和(自身を含む): 53489968

約数和(自身を除く): 32203300

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 78, 156, 136453, 272906, 409359, 545812, 818718, 1637436, 1773889, 3547778, 5321667, 7095556, 10643334, 21286668]

約数ペア:

[(1, 21286668), (2, 10643334), (3, 7095556), (4, 5321667), (6, 3547778), (12, 1773889), (13, 1637436), (26, 818718), (39, 545812), (52, 409359), (78, 272906), (156, 136453)]