20396090

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{839}}^1$

素因数の和:887

約数の個数: 64

約数和(自身を含む): 45722880

約数和(自身を除く): 25326790

約数列:

[1, 2, 5, 10, 11, 13, 17, 22, 26, 34, 55, 65, 85, 110, 130, 143, 170, 187, 221, 286, 374, 442, 715, 839, 935, 1105, 1430, 1678, 1870, 2210, 2431, 4195, 4862, 8390, 9229, 10907, 12155, 14263, 18458, 21814, 24310, 28526, 46145, 54535, 71315, 92290, 109070, 119977, 142630, 156893, 185419, 239954, 313786, 370838, 599885, 784465, 927095, 1199770, 1568930, 1854190, 2039609, 4079218, 10198045, 20396090]

約数ペア:

[(1, 20396090), (2, 10198045), (5, 4079218), (10, 2039609), (11, 1854190), (13, 1568930), (17, 1199770), (22, 927095), (26, 784465), (34, 599885), (55, 370838), (65, 313786), (85, 239954), (110, 185419), (130, 156893), (143, 142630), (170, 119977), (187, 109070), (221, 92290), (286, 71315), (374, 54535), (442, 46145), (715, 28526), (839, 24310), (935, 21814), (1105, 18458), (1430, 14263), (1678, 12155), (1870, 10907), (2210, 9229), (2431, 8390), (4195, 4862)]