20351120

素因数分解:

$2^4\times 5^1\times {\mathrm{254389}}^1$

素因数の和:254402

約数の個数: 20

約数和(自身を含む): 47316540

約数和(自身を除く): 26965420

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 254389, 508778, 1017556, 1271945, 2035112, 2543890, 4070224, 5087780, 10175560, 20351120]

約数ペア:

[(1, 20351120), (2, 10175560), (4, 5087780), (5, 4070224), (8, 2543890), (10, 2035112), (16, 1271945), (20, 1017556), (40, 508778), (80, 254389)]