219134920

素因数分解:

$2^3\times 5^1\times {\mathrm{197}}^1\times {\mathrm{27809}}^1$

素因数の和:28017

約数の個数: 32

約数和(自身を含む): 495574200

約数和(自身を除く): 276439280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 197, 394, 788, 985, 1576, 1970, 3940, 7880, 27809, 55618, 111236, 139045, 222472, 278090, 556180, 1112360, 5478373, 10956746, 21913492, 27391865, 43826984, 54783730, 109567460, 219134920]

約数ペア:

[(1, 219134920), (2, 109567460), (4, 54783730), (5, 43826984), (8, 27391865), (10, 21913492), (20, 10956746), (40, 5478373), (197, 1112360), (394, 556180), (788, 278090), (985, 222472), (1576, 139045), (1970, 111236), (3940, 55618), (7880, 27809)]