18400280

素因数分解:

$2^3\times 5^1\times {\mathrm{173}}^1\times {\mathrm{2659}}^1$

素因数の和:2843

約数の個数: 32

約数和(自身を含む): 41655600

約数和(自身を除く): 23255320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 173, 346, 692, 865, 1384, 1730, 2659, 3460, 5318, 6920, 10636, 13295, 21272, 26590, 53180, 106360, 460007, 920014, 1840028, 2300035, 3680056, 4600070, 9200140, 18400280]

約数ペア:

[(1, 18400280), (2, 9200140), (4, 4600070), (5, 3680056), (8, 2300035), (10, 1840028), (20, 920014), (40, 460007), (173, 106360), (346, 53180), (692, 26590), (865, 21272), (1384, 13295), (1730, 10636), (2659, 6920), (3460, 5318)]