20171808200

素因数分解:

$2^3\times 5^2\times {\mathrm{397}}^1\times {\mathrm{254053}}^1$

素因数の和:254466

約数の個数: 48

約数和(自身を含む): 47017773780

約数和(自身を除く): 26845965580

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 200, 397, 794, 1588, 1985, 3176, 3970, 7940, 9925, 15880, 19850, 39700, 79400, 254053, 508106, 1016212, 1270265, 2032424, 2540530, 5081060, 6351325, 10162120, 12702650, 25405300, 50810600, 100859041, 201718082, 403436164, 504295205, 806872328, 1008590410, 2017180820, 2521476025, 4034361640, 5042952050, 10085904100, 20171808200]

約数ペア:

[(1, 20171808200), (2, 10085904100), (4, 5042952050), (5, 4034361640), (8, 2521476025), (10, 2017180820), (20, 1008590410), (25, 806872328), (40, 504295205), (50, 403436164), (100, 201718082), (200, 100859041), (397, 50810600), (794, 25405300), (1588, 12702650), (1985, 10162120), (3176, 6351325), (3970, 5081060), (7940, 2540530), (9925, 2032424), (15880, 1270265), (19850, 1016212), (39700, 508106), (79400, 254053)]