20497788

素因数分解:

$2^2\times 3^2\times {\mathrm{439}}^1\times {\mathrm{1297}}^1$

素因数の和:1746

約数の個数: 36

約数和(自身を含む): 51971920

約数和(自身を除く): 31474132

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 439, 878, 1297, 1317, 1756, 2594, 2634, 3891, 3951, 5188, 5268, 7782, 7902, 11673, 15564, 15804, 23346, 46692, 569383, 1138766, 1708149, 2277532, 3416298, 5124447, 6832596, 10248894, 20497788]

約数ペア:

[(1, 20497788), (2, 10248894), (3, 6832596), (4, 5124447), (6, 3416298), (9, 2277532), (12, 1708149), (18, 1138766), (36, 569383), (439, 46692), (878, 23346), (1297, 15804), (1317, 15564), (1756, 11673), (2594, 7902), (2634, 7782), (3891, 5268), (3951, 5188)]