21568305

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{1951}}^1$

素因数の和:2037

約数の個数: 32

約数和(自身を含む): 38227968

約数和(自身を除く): 16659663

約数列:

[1, 3, 5, 11, 15, 33, 55, 67, 165, 201, 335, 737, 1005, 1951, 2211, 3685, 5853, 9755, 11055, 21461, 29265, 64383, 107305, 130717, 321915, 392151, 653585, 1437887, 1960755, 4313661, 7189435, 21568305]

約数ペア:

[(1, 21568305), (3, 7189435), (5, 4313661), (11, 1960755), (15, 1437887), (33, 653585), (55, 392151), (67, 321915), (165, 130717), (201, 107305), (335, 64383), (737, 29265), (1005, 21461), (1951, 11055), (2211, 9755), (3685, 5853)]