18225680

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{139}}^1\times {\mathrm{149}}^1$

素因数の和:312

約数の個数: 80

約数和(自身を含む): 46872000

約数和(自身を除く): 28646320

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 139, 149, 176, 220, 278, 298, 440, 556, 596, 695, 745, 880, 1112, 1192, 1390, 1490, 1529, 1639, 2224, 2384, 2780, 2980, 3058, 3278, 5560, 5960, 6116, 6556, 7645, 8195, 11120, 11920, 12232, 13112, 15290, 16390, 20711, 24464, 26224, 30580, 32780, 41422, 61160, 65560, 82844, 103555, 122320, 131120, 165688, 207110, 227821, 331376, 414220, 455642, 828440, 911284, 1139105, 1656880, 1822568, 2278210, 3645136, 4556420, 9112840, 18225680]

約数ペア:

[(1, 18225680), (2, 9112840), (4, 4556420), (5, 3645136), (8, 2278210), (10, 1822568), (11, 1656880), (16, 1139105), (20, 911284), (22, 828440), (40, 455642), (44, 414220), (55, 331376), (80, 227821), (88, 207110), (110, 165688), (139, 131120), (149, 122320), (176, 103555), (220, 82844), (278, 65560), (298, 61160), (440, 41422), (556, 32780), (596, 30580), (695, 26224), (745, 24464), (880, 20711), (1112, 16390), (1192, 15290), (1390, 13112), (1490, 12232), (1529, 11920), (1639, 11120), (2224, 8195), (2384, 7645), (2780, 6556), (2980, 6116), (3058, 5960), (3278, 5560)]