21512040

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{379}}^1$

素因数の和:447

約数の個数: 128

約数和(自身を含む): 72230400

約数和(自身を除く): 50718360

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 20, 22, 24, 30, 33, 40, 43, 44, 55, 60, 66, 86, 88, 110, 120, 129, 132, 165, 172, 215, 220, 258, 264, 330, 344, 379, 430, 440, 473, 516, 645, 660, 758, 860, 946, 1032, 1137, 1290, 1320, 1419, 1516, 1720, 1892, 1895, 2274, 2365, 2580, 2838, 3032, 3784, 3790, 4169, 4548, 4730, 5160, 5676, 5685, 7095, 7580, 8338, 9096, 9460, 11352, 11370, 12507, 14190, 15160, 16297, 16676, 18920, 20845, 22740, 25014, 28380, 32594, 33352, 41690, 45480, 48891, 50028, 56760, 62535, 65188, 81485, 83380, 97782, 100056, 125070, 130376, 162970, 166760, 179267, 195564, 244455, 250140, 325940, 358534, 391128, 488910, 500280, 537801, 651880, 717068, 896335, 977820, 1075602, 1434136, 1792670, 1955640, 2151204, 2689005, 3585340, 4302408, 5378010, 7170680, 10756020, 21512040]

約数ペア:

[(1, 21512040), (2, 10756020), (3, 7170680), (4, 5378010), (5, 4302408), (6, 3585340), (8, 2689005), (10, 2151204), (11, 1955640), (12, 1792670), (15, 1434136), (20, 1075602), (22, 977820), (24, 896335), (30, 717068), (33, 651880), (40, 537801), (43, 500280), (44, 488910), (55, 391128), (60, 358534), (66, 325940), (86, 250140), (88, 244455), (110, 195564), (120, 179267), (129, 166760), (132, 162970), (165, 130376), (172, 125070), (215, 100056), (220, 97782), (258, 83380), (264, 81485), (330, 65188), (344, 62535), (379, 56760), (430, 50028), (440, 48891), (473, 45480), (516, 41690), (645, 33352), (660, 32594), (758, 28380), (860, 25014), (946, 22740), (1032, 20845), (1137, 18920), (1290, 16676), (1320, 16297), (1419, 15160), (1516, 14190), (1720, 12507), (1892, 11370), (1895, 11352), (2274, 9460), (2365, 9096), (2580, 8338), (2838, 7580), (3032, 7095), (3784, 5685), (3790, 5676), (4169, 5160), (4548, 4730)]