221387905

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{113}}^1\times {\mathrm{503}}^1$

素因数の和:681

約数の個数: 32

約数和(自身を含む): 289578240

約数和(自身を除く): 68190335

約数列:

[1, 5, 19, 41, 95, 113, 205, 503, 565, 779, 2147, 2515, 3895, 4633, 9557, 10735, 20623, 23165, 47785, 56839, 88027, 103115, 284195, 391837, 440135, 1079941, 1959185, 2330399, 5399705, 11651995, 44277581, 221387905]

約数ペア:

[(1, 221387905), (5, 44277581), (19, 11651995), (41, 5399705), (95, 2330399), (113, 1959185), (205, 1079941), (503, 440135), (565, 391837), (779, 284195), (2147, 103115), (2515, 88027), (3895, 56839), (4633, 47785), (9557, 23165), (10735, 20623)]