20455590

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{2111}}^1$

素因数の和:2157

約数の個数: 64

約数和(自身を含む): 54743040

約数和(自身を除く): 34287450

約数列:

[1, 2, 3, 5, 6, 10, 15, 17, 19, 30, 34, 38, 51, 57, 85, 95, 102, 114, 170, 190, 255, 285, 323, 510, 570, 646, 969, 1615, 1938, 2111, 3230, 4222, 4845, 6333, 9690, 10555, 12666, 21110, 31665, 35887, 40109, 63330, 71774, 80218, 107661, 120327, 179435, 200545, 215322, 240654, 358870, 401090, 538305, 601635, 681853, 1076610, 1203270, 1363706, 2045559, 3409265, 4091118, 6818530, 10227795, 20455590]

約数ペア:

[(1, 20455590), (2, 10227795), (3, 6818530), (5, 4091118), (6, 3409265), (10, 2045559), (15, 1363706), (17, 1203270), (19, 1076610), (30, 681853), (34, 601635), (38, 538305), (51, 401090), (57, 358870), (85, 240654), (95, 215322), (102, 200545), (114, 179435), (170, 120327), (190, 107661), (255, 80218), (285, 71774), (323, 63330), (510, 40109), (570, 35887), (646, 31665), (969, 21110), (1615, 12666), (1938, 10555), (2111, 9690), (3230, 6333), (4222, 4845)]