20806671410

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{149}}^1\times {\mathrm{28097}}^1$

素因数の和:28331

約数の個数: 64

約数和(自身を含む): 43698009600

約数和(自身を除く): 22891338190

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 71, 142, 149, 298, 355, 497, 710, 745, 994, 1043, 1490, 2086, 2485, 4970, 5215, 10430, 10579, 21158, 28097, 52895, 56194, 74053, 105790, 140485, 148106, 196679, 280970, 370265, 393358, 740530, 983395, 1966790, 1994887, 3989774, 4186453, 8372906, 9974435, 13964209, 19948870, 20932265, 27928418, 29305171, 41864530, 58610342, 69821045, 139642090, 146525855, 293051710, 297238163, 594476326, 1486190815, 2080667141, 2972381630, 4161334282, 10403335705, 20806671410]

約数ペア:

[(1, 20806671410), (2, 10403335705), (5, 4161334282), (7, 2972381630), (10, 2080667141), (14, 1486190815), (35, 594476326), (70, 297238163), (71, 293051710), (142, 146525855), (149, 139642090), (298, 69821045), (355, 58610342), (497, 41864530), (710, 29305171), (745, 27928418), (994, 20932265), (1043, 19948870), (1490, 13964209), (2086, 9974435), (2485, 8372906), (4970, 4186453), (5215, 3989774), (10430, 1994887), (10579, 1966790), (21158, 983395), (28097, 740530), (52895, 393358), (56194, 370265), (74053, 280970), (105790, 196679), (140485, 148106)]