20244940

素因数分解:

$2^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{71}}^1\times {\mathrm{269}}^1$

素因数の和:402

約数の個数: 48

約数和(自身を含む): 44089920

約数和(自身を除く): 23844980

約数列:

[1, 2, 4, 5, 10, 20, 53, 71, 106, 142, 212, 265, 269, 284, 355, 530, 538, 710, 1060, 1076, 1345, 1420, 2690, 3763, 5380, 7526, 14257, 15052, 18815, 19099, 28514, 37630, 38198, 57028, 71285, 75260, 76396, 95495, 142570, 190990, 285140, 381980, 1012247, 2024494, 4048988, 5061235, 10122470, 20244940]

約数ペア:

[(1, 20244940), (2, 10122470), (4, 5061235), (5, 4048988), (10, 2024494), (20, 1012247), (53, 381980), (71, 285140), (106, 190990), (142, 142570), (212, 95495), (265, 76396), (269, 75260), (284, 71285), (355, 57028), (530, 38198), (538, 37630), (710, 28514), (1060, 19099), (1076, 18815), (1345, 15052), (1420, 14257), (2690, 7526), (3763, 5380)]