21220070

素因数分解:

$2^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{61}}^1\times {\mathrm{809}}^1$

素因数の和:920

約数の個数: 32

約数和(自身を含む): 39774240

約数和(自身を除く): 18554170

約数列:

[1, 2, 5, 10, 43, 61, 86, 122, 215, 305, 430, 610, 809, 1618, 2623, 4045, 5246, 8090, 13115, 26230, 34787, 49349, 69574, 98698, 173935, 246745, 347870, 493490, 2122007, 4244014, 10610035, 21220070]

約数ペア:

[(1, 21220070), (2, 10610035), (5, 4244014), (10, 2122007), (43, 493490), (61, 347870), (86, 246745), (122, 173935), (215, 98698), (305, 69574), (430, 49349), (610, 34787), (809, 26230), (1618, 13115), (2623, 8090), (4045, 5246)]