21810880

素因数分解:

$2^6\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{107}}^1$

素因数の和:151

約数の個数: 168

約数和(自身を含む): 65672208

約数和(自身を除く): 43861328

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 26, 28, 32, 35, 40, 49, 52, 56, 64, 65, 70, 80, 91, 98, 104, 107, 112, 130, 140, 160, 182, 196, 208, 214, 224, 245, 260, 280, 320, 364, 392, 416, 428, 448, 455, 490, 520, 535, 560, 637, 728, 749, 784, 832, 856, 910, 980, 1040, 1070, 1120, 1274, 1391, 1456, 1498, 1568, 1712, 1820, 1960, 2080, 2140, 2240, 2548, 2782, 2912, 2996, 3136, 3185, 3424, 3640, 3745, 3920, 4160, 4280, 5096, 5243, 5564, 5824, 5992, 6370, 6848, 6955, 7280, 7490, 7840, 8560, 9737, 10192, 10486, 11128, 11984, 12740, 13910, 14560, 14980, 15680, 17120, 19474, 20384, 20972, 22256, 23968, 25480, 26215, 27820, 29120, 29960, 34240, 38948, 40768, 41944, 44512, 47936, 48685, 50960, 52430, 55640, 59920, 68159, 77896, 83888, 89024, 97370, 101920, 104860, 111280, 119840, 136318, 155792, 167776, 194740, 203840, 209720, 222560, 239680, 272636, 311584, 335552, 340795, 389480, 419440, 445120, 545272, 623168, 681590, 778960, 838880, 1090544, 1363180, 1557920, 1677760, 2181088, 2726360, 3115840, 4362176, 5452720, 10905440, 21810880]

約数ペア:

[(1, 21810880), (2, 10905440), (4, 5452720), (5, 4362176), (7, 3115840), (8, 2726360), (10, 2181088), (13, 1677760), (14, 1557920), (16, 1363180), (20, 1090544), (26, 838880), (28, 778960), (32, 681590), (35, 623168), (40, 545272), (49, 445120), (52, 419440), (56, 389480), (64, 340795), (65, 335552), (70, 311584), (80, 272636), (91, 239680), (98, 222560), (104, 209720), (107, 203840), (112, 194740), (130, 167776), (140, 155792), (160, 136318), (182, 119840), (196, 111280), (208, 104860), (214, 101920), (224, 97370), (245, 89024), (260, 83888), (280, 77896), (320, 68159), (364, 59920), (392, 55640), (416, 52430), (428, 50960), (448, 48685), (455, 47936), (490, 44512), (520, 41944), (535, 40768), (560, 38948), (637, 34240), (728, 29960), (749, 29120), (784, 27820), (832, 26215), (856, 25480), (910, 23968), (980, 22256), (1040, 20972), (1070, 20384), (1120, 19474), (1274, 17120), (1391, 15680), (1456, 14980), (1498, 14560), (1568, 13910), (1712, 12740), (1820, 11984), (1960, 11128), (2080, 10486), (2140, 10192), (2240, 9737), (2548, 8560), (2782, 7840), (2912, 7490), (2996, 7280), (3136, 6955), (3185, 6848), (3424, 6370), (3640, 5992), (3745, 5824), (3920, 5564), (4160, 5243), (4280, 5096)]