218635880

素因数分解:

$2^3\times 5^1\times {\mathrm{139}}^1\times {\mathrm{39323}}^1$

素因数の和:39473

約数の個数: 32

約数和(自身を含む): 495482400

約数和(自身を除く): 276846520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 139, 278, 556, 695, 1112, 1390, 2780, 5560, 39323, 78646, 157292, 196615, 314584, 393230, 786460, 1572920, 5465897, 10931794, 21863588, 27329485, 43727176, 54658970, 109317940, 218635880]

約数ペア:

[(1, 218635880), (2, 109317940), (4, 54658970), (5, 43727176), (8, 27329485), (10, 21863588), (20, 10931794), (40, 5465897), (139, 1572920), (278, 786460), (556, 393230), (695, 314584), (1112, 196615), (1390, 157292), (2780, 78646), (5560, 39323)]