20949970

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{1553}}^1$

素因数の和:1650

約数の個数: 32

約数和(自身を含む): 40279680

約数和(自身を除く): 19329710

約数列:

[1, 2, 5, 10, 19, 38, 71, 95, 142, 190, 355, 710, 1349, 1553, 2698, 3106, 6745, 7765, 13490, 15530, 29507, 59014, 110263, 147535, 220526, 295070, 551315, 1102630, 2094997, 4189994, 10474985, 20949970]

約数ペア:

[(1, 20949970), (2, 10474985), (5, 4189994), (10, 2094997), (19, 1102630), (38, 551315), (71, 295070), (95, 220526), (142, 147535), (190, 110263), (355, 59014), (710, 29507), (1349, 15530), (1553, 13490), (2698, 7765), (3106, 6745)]