385403780

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{621619}}^1$

素因数の和:621659

約数の個数: 24

約数和(自身を含む): 835457280

約数和(自身を除く): 450053500

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 621619, 1243238, 2486476, 3108095, 6216190, 12432380, 19270189, 38540378, 77080756, 96350945, 192701890, 385403780]

約数ペア:

[(1, 385403780), (2, 192701890), (4, 96350945), (5, 77080756), (10, 38540378), (20, 19270189), (31, 12432380), (62, 6216190), (124, 3108095), (155, 2486476), (310, 1243238), (620, 621619)]