21495240

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1531}}^1$

素因数の和:1564

約数の個数: 128

約数和(自身を含む): 77212800

約数和(自身を除く): 55717560

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 18, 20, 24, 26, 27, 30, 36, 39, 40, 45, 52, 54, 60, 65, 72, 78, 90, 104, 108, 117, 120, 130, 135, 156, 180, 195, 216, 234, 260, 270, 312, 351, 360, 390, 468, 520, 540, 585, 702, 780, 936, 1080, 1170, 1404, 1531, 1560, 1755, 2340, 2808, 3062, 3510, 4593, 4680, 6124, 7020, 7655, 9186, 12248, 13779, 14040, 15310, 18372, 19903, 22965, 27558, 30620, 36744, 39806, 41337, 45930, 55116, 59709, 61240, 68895, 79612, 82674, 91860, 99515, 110232, 119418, 137790, 159224, 165348, 179127, 183720, 199030, 206685, 238836, 275580, 298545, 330696, 358254, 398060, 413370, 477672, 537381, 551160, 597090, 716508, 796120, 826740, 895635, 1074762, 1194180, 1433016, 1653480, 1791270, 2149524, 2388360, 2686905, 3582540, 4299048, 5373810, 7165080, 10747620, 21495240]

約数ペア:

[(1, 21495240), (2, 10747620), (3, 7165080), (4, 5373810), (5, 4299048), (6, 3582540), (8, 2686905), (9, 2388360), (10, 2149524), (12, 1791270), (13, 1653480), (15, 1433016), (18, 1194180), (20, 1074762), (24, 895635), (26, 826740), (27, 796120), (30, 716508), (36, 597090), (39, 551160), (40, 537381), (45, 477672), (52, 413370), (54, 398060), (60, 358254), (65, 330696), (72, 298545), (78, 275580), (90, 238836), (104, 206685), (108, 199030), (117, 183720), (120, 179127), (130, 165348), (135, 159224), (156, 137790), (180, 119418), (195, 110232), (216, 99515), (234, 91860), (260, 82674), (270, 79612), (312, 68895), (351, 61240), (360, 59709), (390, 55116), (468, 45930), (520, 41337), (540, 39806), (585, 36744), (702, 30620), (780, 27558), (936, 22965), (1080, 19903), (1170, 18372), (1404, 15310), (1531, 14040), (1560, 13779), (1755, 12248), (2340, 9186), (2808, 7655), (3062, 7020), (3510, 6124), (4593, 4680)]