20165681788

素因数分解:

$2^2\times 7^1\times {\mathrm{1091}}^1\times {\mathrm{660131}}^1$

素因数の和:661233

約数の個数: 24

約数和(自身を含む): 40368392064

約数和(自身を除く): 20202710276

約数列:

[1, 2, 4, 7, 14, 28, 1091, 2182, 4364, 7637, 15274, 30548, 660131, 1320262, 2640524, 4620917, 9241834, 18483668, 720202921, 1440405842, 2880811684, 5041420447, 10082840894, 20165681788]

約数ペア:

[(1, 20165681788), (2, 10082840894), (4, 5041420447), (7, 2880811684), (14, 1440405842), (28, 720202921), (1091, 18483668), (2182, 9241834), (4364, 4620917), (7637, 2640524), (15274, 1320262), (30548, 660131)]