20515248

素因数分解:

$2^4\times 3^3\times {\mathrm{13}}^2\times {\mathrm{281}}^1$

素因数の和:324

約数の個数: 120

約数和(自身を含む): 63991440

約数和(自身を除く): 43476192

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 13, 16, 18, 24, 26, 27, 36, 39, 48, 52, 54, 72, 78, 104, 108, 117, 144, 156, 169, 208, 216, 234, 281, 312, 338, 351, 432, 468, 507, 562, 624, 676, 702, 843, 936, 1014, 1124, 1352, 1404, 1521, 1686, 1872, 2028, 2248, 2529, 2704, 2808, 3042, 3372, 3653, 4056, 4496, 4563, 5058, 5616, 6084, 6744, 7306, 7587, 8112, 9126, 10116, 10959, 12168, 13488, 14612, 15174, 18252, 20232, 21918, 24336, 29224, 30348, 32877, 36504, 40464, 43836, 47489, 58448, 60696, 65754, 73008, 87672, 94978, 98631, 121392, 131508, 142467, 175344, 189956, 197262, 263016, 284934, 379912, 394524, 427401, 526032, 569868, 759824, 789048, 854802, 1139736, 1282203, 1578096, 1709604, 2279472, 2564406, 3419208, 5128812, 6838416, 10257624, 20515248]

約数ペア:

[(1, 20515248), (2, 10257624), (3, 6838416), (4, 5128812), (6, 3419208), (8, 2564406), (9, 2279472), (12, 1709604), (13, 1578096), (16, 1282203), (18, 1139736), (24, 854802), (26, 789048), (27, 759824), (36, 569868), (39, 526032), (48, 427401), (52, 394524), (54, 379912), (72, 284934), (78, 263016), (104, 197262), (108, 189956), (117, 175344), (144, 142467), (156, 131508), (169, 121392), (208, 98631), (216, 94978), (234, 87672), (281, 73008), (312, 65754), (338, 60696), (351, 58448), (432, 47489), (468, 43836), (507, 40464), (562, 36504), (624, 32877), (676, 30348), (702, 29224), (843, 24336), (936, 21918), (1014, 20232), (1124, 18252), (1352, 15174), (1404, 14612), (1521, 13488), (1686, 12168), (1872, 10959), (2028, 10116), (2248, 9126), (2529, 8112), (2704, 7587), (2808, 7306), (3042, 6744), (3372, 6084), (3653, 5616), (4056, 5058), (4496, 4563)]