1680821360

素因数分解:

$2^4\times 5^1\times {\mathrm{139}}^1\times {\mathrm{151153}}^1$

素因数の和:151305

約数の個数: 40

約数和(自身を含む): 3936050160

約数和(自身を除く): 2255228800

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 139, 278, 556, 695, 1112, 1390, 2224, 2780, 5560, 11120, 151153, 302306, 604612, 755765, 1209224, 1511530, 2418448, 3023060, 6046120, 12092240, 21010267, 42020534, 84041068, 105051335, 168082136, 210102670, 336164272, 420205340, 840410680, 1680821360]

約数ペア:

[(1, 1680821360), (2, 840410680), (4, 420205340), (5, 336164272), (8, 210102670), (10, 168082136), (16, 105051335), (20, 84041068), (40, 42020534), (80, 21010267), (139, 12092240), (278, 6046120), (556, 3023060), (695, 2418448), (1112, 1511530), (1390, 1209224), (2224, 755765), (2780, 604612), (5560, 302306), (11120, 151153)]