21867230

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{4057}}^1$

素因数の和:4089

約数の個数: 48

約数和(自身を含む): 49962096

約数和(自身を除く): 28094866

約数列:

[1, 2, 5, 7, 10, 11, 14, 22, 35, 49, 55, 70, 77, 98, 110, 154, 245, 385, 490, 539, 770, 1078, 2695, 4057, 5390, 8114, 20285, 28399, 40570, 44627, 56798, 89254, 141995, 198793, 223135, 283990, 312389, 397586, 446270, 624778, 993965, 1561945, 1987930, 2186723, 3123890, 4373446, 10933615, 21867230]

約数ペア:

[(1, 21867230), (2, 10933615), (5, 4373446), (7, 3123890), (10, 2186723), (11, 1987930), (14, 1561945), (22, 993965), (35, 624778), (49, 446270), (55, 397586), (70, 312389), (77, 283990), (98, 223135), (110, 198793), (154, 141995), (245, 89254), (385, 56798), (490, 44627), (539, 40570), (770, 28399), (1078, 20285), (2695, 8114), (4057, 5390)]