21661808

素因数分解:

$2^4\times 7^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{367}}^1$

素因数の和:430

約数の個数: 80

約数和(自身を含む): 52568064

約数和(自身を除く): 30906256

約数列:

[1, 2, 4, 7, 8, 14, 16, 17, 28, 31, 34, 56, 62, 68, 112, 119, 124, 136, 217, 238, 248, 272, 367, 434, 476, 496, 527, 734, 868, 952, 1054, 1468, 1736, 1904, 2108, 2569, 2936, 3472, 3689, 4216, 5138, 5872, 6239, 7378, 8432, 10276, 11377, 12478, 14756, 20552, 22754, 24956, 29512, 41104, 43673, 45508, 49912, 59024, 79639, 87346, 91016, 99824, 159278, 174692, 182032, 193409, 318556, 349384, 386818, 637112, 698768, 773636, 1274224, 1353863, 1547272, 2707726, 3094544, 5415452, 10830904, 21661808]

約数ペア:

[(1, 21661808), (2, 10830904), (4, 5415452), (7, 3094544), (8, 2707726), (14, 1547272), (16, 1353863), (17, 1274224), (28, 773636), (31, 698768), (34, 637112), (56, 386818), (62, 349384), (68, 318556), (112, 193409), (119, 182032), (124, 174692), (136, 159278), (217, 99824), (238, 91016), (248, 87346), (272, 79639), (367, 59024), (434, 49912), (476, 45508), (496, 43673), (527, 41104), (734, 29512), (868, 24956), (952, 22754), (1054, 20552), (1468, 14756), (1736, 12478), (1904, 11377), (2108, 10276), (2569, 8432), (2936, 7378), (3472, 6239), (3689, 5872), (4216, 5138)]