21580010

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{2143}}^1$

素因数の和:2222

約数の個数: 32

約数和(自身を含む): 41679360

約数和(自身を除く): 20099350

約数列:

[1, 2, 5, 10, 19, 38, 53, 95, 106, 190, 265, 530, 1007, 2014, 2143, 4286, 5035, 10070, 10715, 21430, 40717, 81434, 113579, 203585, 227158, 407170, 567895, 1135790, 2158001, 4316002, 10790005, 21580010]

約数ペア:

[(1, 21580010), (2, 10790005), (5, 4316002), (10, 2158001), (19, 1135790), (38, 567895), (53, 407170), (95, 227158), (106, 203585), (190, 113579), (265, 81434), (530, 40717), (1007, 21430), (2014, 10715), (2143, 10070), (4286, 5035)]