20403020

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{8431}}^1$

素因数の和:8462

約数の個数: 36

約数和(自身を含む): 47101152

約数和(自身を除く): 26698132

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 121, 220, 242, 484, 605, 1210, 2420, 8431, 16862, 33724, 42155, 84310, 92741, 168620, 185482, 370964, 463705, 927410, 1020151, 1854820, 2040302, 4080604, 5100755, 10201510, 20403020]

約数ペア:

[(1, 20403020), (2, 10201510), (4, 5100755), (5, 4080604), (10, 2040302), (11, 1854820), (20, 1020151), (22, 927410), (44, 463705), (55, 370964), (110, 185482), (121, 168620), (220, 92741), (242, 84310), (484, 42155), (605, 33724), (1210, 16862), (2420, 8431)]