21318380

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{56101}}^1$

素因数の和:56129

約数の個数: 24

約数和(自身を含む): 47125680

約数和(自身を除く): 25807300

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 56101, 112202, 224404, 280505, 561010, 1065919, 1122020, 2131838, 4263676, 5329595, 10659190, 21318380]

約数ペア:

[(1, 21318380), (2, 10659190), (4, 5329595), (5, 4263676), (10, 2131838), (19, 1122020), (20, 1065919), (38, 561010), (76, 280505), (95, 224404), (190, 112202), (380, 56101)]