1620781640

素因数分解:

$2^3\times 5^1\times {\mathrm{173}}^1\times {\mathrm{234217}}^1$

素因数の和:234401

約数の個数: 32

約数和(自身を含む): 3667853880

約数和(自身を除く): 2047072240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 173, 346, 692, 865, 1384, 1730, 3460, 6920, 234217, 468434, 936868, 1171085, 1873736, 2342170, 4684340, 9368680, 40519541, 81039082, 162078164, 202597705, 324156328, 405195410, 810390820, 1620781640]

約数ペア:

[(1, 1620781640), (2, 810390820), (4, 405195410), (5, 324156328), (8, 202597705), (10, 162078164), (20, 81039082), (40, 40519541), (173, 9368680), (346, 4684340), (692, 2342170), (865, 1873736), (1384, 1171085), (1730, 936868), (3460, 468434), (6920, 234217)]