21947640

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{1279}}^1$

素因数の和:1317

約数の個数: 128

約数和(自身を含む): 77414400

約数和(自身を除く): 55466760

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 13, 15, 20, 22, 24, 26, 30, 33, 39, 40, 44, 52, 55, 60, 65, 66, 78, 88, 104, 110, 120, 130, 132, 143, 156, 165, 195, 220, 260, 264, 286, 312, 330, 390, 429, 440, 520, 572, 660, 715, 780, 858, 1144, 1279, 1320, 1430, 1560, 1716, 2145, 2558, 2860, 3432, 3837, 4290, 5116, 5720, 6395, 7674, 8580, 10232, 12790, 14069, 15348, 16627, 17160, 19185, 25580, 28138, 30696, 33254, 38370, 42207, 49881, 51160, 56276, 66508, 70345, 76740, 83135, 84414, 99762, 112552, 133016, 140690, 153480, 166270, 168828, 182897, 199524, 211035, 249405, 281380, 332540, 337656, 365794, 399048, 422070, 498810, 548691, 562760, 665080, 731588, 844140, 914485, 997620, 1097382, 1463176, 1688280, 1828970, 1995240, 2194764, 2743455, 3657940, 4389528, 5486910, 7315880, 10973820, 21947640]

約数ペア:

[(1, 21947640), (2, 10973820), (3, 7315880), (4, 5486910), (5, 4389528), (6, 3657940), (8, 2743455), (10, 2194764), (11, 1995240), (12, 1828970), (13, 1688280), (15, 1463176), (20, 1097382), (22, 997620), (24, 914485), (26, 844140), (30, 731588), (33, 665080), (39, 562760), (40, 548691), (44, 498810), (52, 422070), (55, 399048), (60, 365794), (65, 337656), (66, 332540), (78, 281380), (88, 249405), (104, 211035), (110, 199524), (120, 182897), (130, 168828), (132, 166270), (143, 153480), (156, 140690), (165, 133016), (195, 112552), (220, 99762), (260, 84414), (264, 83135), (286, 76740), (312, 70345), (330, 66508), (390, 56276), (429, 51160), (440, 49881), (520, 42207), (572, 38370), (660, 33254), (715, 30696), (780, 28138), (858, 25580), (1144, 19185), (1279, 17160), (1320, 16627), (1430, 15348), (1560, 14069), (1716, 12790), (2145, 10232), (2558, 8580), (2860, 7674), (3432, 6395), (3837, 5720), (4290, 5116)]