20751710

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{73}}^1\times {\mathrm{131}}^1$

素因数の和:249

約数の個数: 64

約数和(自身を含む): 45010944

約数和(自身を除く): 24259234

約数列:

[1, 2, 5, 7, 10, 14, 31, 35, 62, 70, 73, 131, 146, 155, 217, 262, 310, 365, 434, 511, 655, 730, 917, 1022, 1085, 1310, 1834, 2170, 2263, 2555, 4061, 4526, 4585, 5110, 8122, 9170, 9563, 11315, 15841, 19126, 20305, 22630, 28427, 31682, 40610, 47815, 56854, 66941, 79205, 95630, 133882, 142135, 158410, 284270, 296453, 334705, 592906, 669410, 1482265, 2075171, 2964530, 4150342, 10375855, 20751710]

約数ペア:

[(1, 20751710), (2, 10375855), (5, 4150342), (7, 2964530), (10, 2075171), (14, 1482265), (31, 669410), (35, 592906), (62, 334705), (70, 296453), (73, 284270), (131, 158410), (146, 142135), (155, 133882), (217, 95630), (262, 79205), (310, 66941), (365, 56854), (434, 47815), (511, 40610), (655, 31682), (730, 28427), (917, 22630), (1022, 20305), (1085, 19126), (1310, 15841), (1834, 11315), (2170, 9563), (2263, 9170), (2555, 8122), (4061, 5110), (4526, 4585)]