20017450

素因数分解:

$2^1\times 5^2\times {\mathrm{19}}^2\times {\mathrm{1109}}^1$

素因数の和:1159

約数の個数: 36

約数和(自身を含む): 39330630

約数和(自身を除く): 19313180

約数列:

[1, 2, 5, 10, 19, 25, 38, 50, 95, 190, 361, 475, 722, 950, 1109, 1805, 2218, 3610, 5545, 9025, 11090, 18050, 21071, 27725, 42142, 55450, 105355, 210710, 400349, 526775, 800698, 1053550, 2001745, 4003490, 10008725, 20017450]

約数ペア:

[(1, 20017450), (2, 10008725), (5, 4003490), (10, 2001745), (19, 1053550), (25, 800698), (38, 526775), (50, 400349), (95, 210710), (190, 105355), (361, 55450), (475, 42142), (722, 27725), (950, 21071), (1109, 18050), (1805, 11090), (2218, 9025), (3610, 5545)]