21865690

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{389}}^1$

素因数の和:487

約数の個数: 64

約数和(自身を含む): 49870080

約数和(自身を除く): 28004390

約数列:

[1, 2, 5, 7, 10, 11, 14, 22, 35, 55, 70, 73, 77, 110, 146, 154, 365, 385, 389, 511, 730, 770, 778, 803, 1022, 1606, 1945, 2555, 2723, 3890, 4015, 4279, 5110, 5446, 5621, 8030, 8558, 11242, 13615, 21395, 27230, 28105, 28397, 29953, 42790, 56210, 56794, 59906, 141985, 149765, 198779, 283970, 299530, 312367, 397558, 624734, 993895, 1561835, 1987790, 2186569, 3123670, 4373138, 10932845, 21865690]

約数ペア:

[(1, 21865690), (2, 10932845), (5, 4373138), (7, 3123670), (10, 2186569), (11, 1987790), (14, 1561835), (22, 993895), (35, 624734), (55, 397558), (70, 312367), (73, 299530), (77, 283970), (110, 198779), (146, 149765), (154, 141985), (365, 59906), (385, 56794), (389, 56210), (511, 42790), (730, 29953), (770, 28397), (778, 28105), (803, 27230), (1022, 21395), (1606, 13615), (1945, 11242), (2555, 8558), (2723, 8030), (3890, 5621), (4015, 5446), (4279, 5110)]