21214660

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{79}}^1\times {\mathrm{463}}^1$

素因数の和:580

約数の個数: 48

約数和(自身を含む): 46771200

約数和(自身を除く): 25556540

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 79, 116, 145, 158, 290, 316, 395, 463, 580, 790, 926, 1580, 1852, 2291, 2315, 4582, 4630, 9164, 9260, 11455, 13427, 22910, 26854, 36577, 45820, 53708, 67135, 73154, 134270, 146308, 182885, 268540, 365770, 731540, 1060733, 2121466, 4242932, 5303665, 10607330, 21214660]

約数ペア:

[(1, 21214660), (2, 10607330), (4, 5303665), (5, 4242932), (10, 2121466), (20, 1060733), (29, 731540), (58, 365770), (79, 268540), (116, 182885), (145, 146308), (158, 134270), (290, 73154), (316, 67135), (395, 53708), (463, 45820), (580, 36577), (790, 26854), (926, 22910), (1580, 13427), (1852, 11455), (2291, 9260), (2315, 9164), (4582, 4630)]