65855420

素因数分解:

$2^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{23689}}^1$

素因数の和:23837

約数の個数: 24

約数和(自身を含む): 139297200

約数和(自身を除く): 73441780

約数列:

[1, 2, 4, 5, 10, 20, 139, 278, 556, 695, 1390, 2780, 23689, 47378, 94756, 118445, 236890, 473780, 3292771, 6585542, 13171084, 16463855, 32927710, 65855420]

約数ペア:

[(1, 65855420), (2, 32927710), (4, 16463855), (5, 13171084), (10, 6585542), (20, 3292771), (139, 473780), (278, 236890), (556, 118445), (695, 94756), (1390, 47378), (2780, 23689)]