1298990

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{241}}^1$

素因数の和:273

約数の個数: 48

約数和(自身を含む): 2979504

約数和(自身を除く): 1680514

約数列:

[1, 2, 5, 7, 10, 11, 14, 22, 35, 49, 55, 70, 77, 98, 110, 154, 241, 245, 385, 482, 490, 539, 770, 1078, 1205, 1687, 2410, 2651, 2695, 3374, 5302, 5390, 8435, 11809, 13255, 16870, 18557, 23618, 26510, 37114, 59045, 92785, 118090, 129899, 185570, 259798, 649495, 1298990]

約数ペア:

[(1, 1298990), (2, 649495), (5, 259798), (7, 185570), (10, 129899), (11, 118090), (14, 92785), (22, 59045), (35, 37114), (49, 26510), (55, 23618), (70, 18557), (77, 16870), (98, 13255), (110, 11809), (154, 8435), (241, 5390), (245, 5302), (385, 3374), (482, 2695), (490, 2651), (539, 2410), (770, 1687), (1078, 1205)]