21742280

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{11093}}^1$

素因数の和:11118

約数の個数: 48

約数和(自身を含む): 56912220

約数和(自身を除く): 35169940

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 196, 245, 280, 392, 490, 980, 1960, 11093, 22186, 44372, 55465, 77651, 88744, 110930, 155302, 221860, 310604, 388255, 443720, 543557, 621208, 776510, 1087114, 1553020, 2174228, 2717785, 3106040, 4348456, 5435570, 10871140, 21742280]

約数ペア:

[(1, 21742280), (2, 10871140), (4, 5435570), (5, 4348456), (7, 3106040), (8, 2717785), (10, 2174228), (14, 1553020), (20, 1087114), (28, 776510), (35, 621208), (40, 543557), (49, 443720), (56, 388255), (70, 310604), (98, 221860), (140, 155302), (196, 110930), (245, 88744), (280, 77651), (392, 55465), (490, 44372), (980, 22186), (1960, 11093)]