81801808

素因数分解:

$2^4\times {\mathrm{11}}^2\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1$

素因数の和:137

約数の個数: 120

約数和(自身を含む): 189987840

約数和(自身を除く): 108186032

約数列:

[1, 2, 4, 8, 11, 16, 22, 29, 31, 44, 47, 58, 62, 88, 94, 116, 121, 124, 176, 188, 232, 242, 248, 319, 341, 376, 464, 484, 496, 517, 638, 682, 752, 899, 968, 1034, 1276, 1363, 1364, 1457, 1798, 1936, 2068, 2552, 2726, 2728, 2914, 3509, 3596, 3751, 4136, 5104, 5452, 5456, 5687, 5828, 7018, 7192, 7502, 8272, 9889, 10904, 11374, 11656, 14036, 14384, 14993, 15004, 16027, 19778, 21808, 22748, 23312, 28072, 29986, 30008, 32054, 39556, 42253, 45496, 56144, 59972, 60016, 64108, 79112, 84506, 90992, 108779, 119944, 128216, 158224, 164923, 169012, 176297, 217558, 239888, 256432, 329846, 338024, 352594, 435116, 464783, 659692, 676048, 705188, 870232, 929566, 1319384, 1410376, 1740464, 1859132, 2638768, 2820752, 3718264, 5112613, 7436528, 10225226, 20450452, 40900904, 81801808]

約数ペア:

[(1, 81801808), (2, 40900904), (4, 20450452), (8, 10225226), (11, 7436528), (16, 5112613), (22, 3718264), (29, 2820752), (31, 2638768), (44, 1859132), (47, 1740464), (58, 1410376), (62, 1319384), (88, 929566), (94, 870232), (116, 705188), (121, 676048), (124, 659692), (176, 464783), (188, 435116), (232, 352594), (242, 338024), (248, 329846), (319, 256432), (341, 239888), (376, 217558), (464, 176297), (484, 169012), (496, 164923), (517, 158224), (638, 128216), (682, 119944), (752, 108779), (899, 90992), (968, 84506), (1034, 79112), (1276, 64108), (1363, 60016), (1364, 59972), (1457, 56144), (1798, 45496), (1936, 42253), (2068, 39556), (2552, 32054), (2726, 30008), (2728, 29986), (2914, 28072), (3509, 23312), (3596, 22748), (3751, 21808), (4136, 19778), (5104, 16027), (5452, 15004), (5456, 14993), (5687, 14384), (5828, 14036), (7018, 11656), (7192, 11374), (7502, 10904), (8272, 9889)]