90243940

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{155593}}^1$

素因数の和:155631

約数の個数: 24

約数和(自身を含む): 196048440

約数和(自身を除く): 105804500

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 290, 580, 155593, 311186, 622372, 777965, 1555930, 3111860, 4512197, 9024394, 18048788, 22560985, 45121970, 90243940]

約数ペア:

[(1, 90243940), (2, 45121970), (4, 22560985), (5, 18048788), (10, 9024394), (20, 4512197), (29, 3111860), (58, 1555930), (116, 777965), (145, 622372), (290, 311186), (580, 155593)]