21499686

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{661}}^1$

素因数の和:821

約数の個数: 48

約数和(自身を含む): 50603280

約数和(自身を除く): 29103594

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 39, 78, 117, 139, 234, 278, 417, 661, 834, 1251, 1322, 1807, 1983, 2502, 3614, 3966, 5421, 5949, 8593, 10842, 11898, 16263, 17186, 25779, 32526, 51558, 77337, 91879, 154674, 183758, 275637, 551274, 826911, 1194427, 1653822, 2388854, 3583281, 7166562, 10749843, 21499686]

約数ペア:

[(1, 21499686), (2, 10749843), (3, 7166562), (6, 3583281), (9, 2388854), (13, 1653822), (18, 1194427), (26, 826911), (39, 551274), (78, 275637), (117, 183758), (139, 154674), (234, 91879), (278, 77337), (417, 51558), (661, 32526), (834, 25779), (1251, 17186), (1322, 16263), (1807, 11898), (1983, 10842), (2502, 8593), (3614, 5949), (3966, 5421)]