19686260

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{2081}}^1$

素因数の和:2144

約数の個数: 48

約数和(自身を含む): 46170432

約数和(自身を除く): 26484172

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 43, 44, 55, 86, 110, 172, 215, 220, 430, 473, 860, 946, 1892, 2081, 2365, 4162, 4730, 8324, 9460, 10405, 20810, 22891, 41620, 45782, 89483, 91564, 114455, 178966, 228910, 357932, 447415, 457820, 894830, 984313, 1789660, 1968626, 3937252, 4921565, 9843130, 19686260]

約数ペア:

[(1, 19686260), (2, 9843130), (4, 4921565), (5, 3937252), (10, 1968626), (11, 1789660), (20, 984313), (22, 894830), (43, 457820), (44, 447415), (55, 357932), (86, 228910), (110, 178966), (172, 114455), (215, 91564), (220, 89483), (430, 45782), (473, 41620), (860, 22891), (946, 20810), (1892, 10405), (2081, 9460), (2365, 8324), (4162, 4730)]