21620456

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{18899}}^1$

素因数の和:18929

約数の個数: 32

約数和(自身を含む): 47628000

約数和(自身を除く): 26007544

約数列:

[1, 2, 4, 8, 11, 13, 22, 26, 44, 52, 88, 104, 143, 286, 572, 1144, 18899, 37798, 75596, 151192, 207889, 245687, 415778, 491374, 831556, 982748, 1663112, 1965496, 2702557, 5405114, 10810228, 21620456]

約数ペア:

[(1, 21620456), (2, 10810228), (4, 5405114), (8, 2702557), (11, 1965496), (13, 1663112), (22, 982748), (26, 831556), (44, 491374), (52, 415778), (88, 245687), (104, 207889), (143, 151192), (286, 75596), (572, 37798), (1144, 18899)]