21402180

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{118901}}^1$

素因数の和:118916

約数の個数: 36

約数和(自身を含む): 64920492

約数和(自身を除く): 43518312

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 118901, 237802, 356703, 475604, 594505, 713406, 1070109, 1189010, 1426812, 1783515, 2140218, 2378020, 3567030, 4280436, 5350545, 7134060, 10701090, 21402180]

約数ペア:

[(1, 21402180), (2, 10701090), (3, 7134060), (4, 5350545), (5, 4280436), (6, 3567030), (9, 2378020), (10, 2140218), (12, 1783515), (15, 1426812), (18, 1189010), (20, 1070109), (30, 713406), (36, 594505), (45, 475604), (60, 356703), (90, 237802), (180, 118901)]