21478270

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{6733}}^1$

素因数の和:6780

約数の個数: 32

約数和(自身を含む): 43636320

約数和(自身を除く): 22158050

約数列:

[1, 2, 5, 10, 11, 22, 29, 55, 58, 110, 145, 290, 319, 638, 1595, 3190, 6733, 13466, 33665, 67330, 74063, 148126, 195257, 370315, 390514, 740630, 976285, 1952570, 2147827, 4295654, 10739135, 21478270]

約数ペア:

[(1, 21478270), (2, 10739135), (5, 4295654), (10, 2147827), (11, 1952570), (22, 976285), (29, 740630), (55, 390514), (58, 370315), (110, 195257), (145, 148126), (290, 74063), (319, 67330), (638, 33665), (1595, 13466), (3190, 6733)]