18231876

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{163}}^1\times {\mathrm{239}}^1$

素因数の和:425

約数の個数: 72

約数和(自身を含む): 50144640

約数和(自身を除く): 31912764

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 36, 39, 52, 78, 117, 156, 163, 234, 239, 326, 468, 478, 489, 652, 717, 956, 978, 1434, 1467, 1956, 2119, 2151, 2868, 2934, 3107, 4238, 4302, 5868, 6214, 6357, 8476, 8604, 9321, 12428, 12714, 18642, 19071, 25428, 27963, 37284, 38142, 38957, 55926, 76284, 77914, 111852, 116871, 155828, 233742, 350613, 467484, 506441, 701226, 1012882, 1402452, 1519323, 2025764, 3038646, 4557969, 6077292, 9115938, 18231876]

約数ペア:

[(1, 18231876), (2, 9115938), (3, 6077292), (4, 4557969), (6, 3038646), (9, 2025764), (12, 1519323), (13, 1402452), (18, 1012882), (26, 701226), (36, 506441), (39, 467484), (52, 350613), (78, 233742), (117, 155828), (156, 116871), (163, 111852), (234, 77914), (239, 76284), (326, 55926), (468, 38957), (478, 38142), (489, 37284), (652, 27963), (717, 25428), (956, 19071), (978, 18642), (1434, 12714), (1467, 12428), (1956, 9321), (2119, 8604), (2151, 8476), (2868, 6357), (2934, 6214), (3107, 5868), (4238, 4302)]