21518140

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{153701}}^1$

素因数の和:153717

約数の個数: 24

約数和(自身を含む): 51643872

約数和(自身を除く): 30125732

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 153701, 307402, 614804, 768505, 1075907, 1537010, 2151814, 3074020, 4303628, 5379535, 10759070, 21518140]

約数ペア:

[(1, 21518140), (2, 10759070), (4, 5379535), (5, 4303628), (7, 3074020), (10, 2151814), (14, 1537010), (20, 1075907), (28, 768505), (35, 614804), (70, 307402), (140, 153701)]