388689980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{2776357}}^1$

素因数の和:2776373

約数の個数: 24

約数和(自身を含む): 932856288

約数和(自身を除く): 544166308

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 2776357, 5552714, 11105428, 13881785, 19434499, 27763570, 38868998, 55527140, 77737996, 97172495, 194344990, 388689980]

約数ペア:

[(1, 388689980), (2, 194344990), (4, 97172495), (5, 77737996), (7, 55527140), (10, 38868998), (14, 27763570), (20, 19434499), (28, 13881785), (35, 11105428), (70, 5552714), (140, 2776357)]