20718972

素因数分解:

$2^2\times 3^2\times {\mathrm{53}}^1\times {\mathrm{10859}}^1$

素因数の和:10922

約数の個数: 36

約数和(自身を含む): 53366040

約数和(自身を除く): 32647068

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 53, 106, 159, 212, 318, 477, 636, 954, 1908, 10859, 21718, 32577, 43436, 65154, 97731, 130308, 195462, 390924, 575527, 1151054, 1726581, 2302108, 3453162, 5179743, 6906324, 10359486, 20718972]

約数ペア:

[(1, 20718972), (2, 10359486), (3, 6906324), (4, 5179743), (6, 3453162), (9, 2302108), (12, 1726581), (18, 1151054), (36, 575527), (53, 390924), (106, 195462), (159, 130308), (212, 97731), (318, 65154), (477, 43436), (636, 32577), (954, 21718), (1908, 10859)]