21130668

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{163}}^1\times {\mathrm{277}}^1$

素因数の和:463

約数の個数: 72

約数和(自身を含む): 58084208

約数和(自身を除く): 36953540

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 36, 39, 52, 78, 117, 156, 163, 234, 277, 326, 468, 489, 554, 652, 831, 978, 1108, 1467, 1662, 1956, 2119, 2493, 2934, 3324, 3601, 4238, 4986, 5868, 6357, 7202, 8476, 9972, 10803, 12714, 14404, 19071, 21606, 25428, 32409, 38142, 43212, 45151, 64818, 76284, 90302, 129636, 135453, 180604, 270906, 406359, 541812, 586963, 812718, 1173926, 1625436, 1760889, 2347852, 3521778, 5282667, 7043556, 10565334, 21130668]

約数ペア:

[(1, 21130668), (2, 10565334), (3, 7043556), (4, 5282667), (6, 3521778), (9, 2347852), (12, 1760889), (13, 1625436), (18, 1173926), (26, 812718), (36, 586963), (39, 541812), (52, 406359), (78, 270906), (117, 180604), (156, 135453), (163, 129636), (234, 90302), (277, 76284), (326, 64818), (468, 45151), (489, 43212), (554, 38142), (652, 32409), (831, 25428), (978, 21606), (1108, 19071), (1467, 14404), (1662, 12714), (1956, 10803), (2119, 9972), (2493, 8476), (2934, 7202), (3324, 6357), (3601, 5868), (4238, 4986)]