19938160

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{139}}^1\times {\mathrm{163}}^1$

素因数の和:326

約数の個数: 80

約数和(自身を含む): 51246720

約数和(自身を除く): 31308560

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 139, 163, 176, 220, 278, 326, 440, 556, 652, 695, 815, 880, 1112, 1304, 1390, 1529, 1630, 1793, 2224, 2608, 2780, 3058, 3260, 3586, 5560, 6116, 6520, 7172, 7645, 8965, 11120, 12232, 13040, 14344, 15290, 17930, 22657, 24464, 28688, 30580, 35860, 45314, 61160, 71720, 90628, 113285, 122320, 143440, 181256, 226570, 249227, 362512, 453140, 498454, 906280, 996908, 1246135, 1812560, 1993816, 2492270, 3987632, 4984540, 9969080, 19938160]

約数ペア:

[(1, 19938160), (2, 9969080), (4, 4984540), (5, 3987632), (8, 2492270), (10, 1993816), (11, 1812560), (16, 1246135), (20, 996908), (22, 906280), (40, 498454), (44, 453140), (55, 362512), (80, 249227), (88, 226570), (110, 181256), (139, 143440), (163, 122320), (176, 113285), (220, 90628), (278, 71720), (326, 61160), (440, 45314), (556, 35860), (652, 30580), (695, 28688), (815, 24464), (880, 22657), (1112, 17930), (1304, 15290), (1390, 14344), (1529, 13040), (1630, 12232), (1793, 11120), (2224, 8965), (2608, 7645), (2780, 7172), (3058, 6520), (3260, 6116), (3586, 5560)]