664831720

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{2374399}}^1$

素因数の和:2374417

約数の個数: 32

約数和(自身を含む): 1709568000

約数和(自身を除く): 1044736280

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 2374399, 4748798, 9497596, 11871995, 16620793, 18995192, 23743990, 33241586, 47487980, 66483172, 83103965, 94975960, 132966344, 166207930, 332415860, 664831720]

約数ペア:

[(1, 664831720), (2, 332415860), (4, 166207930), (5, 132966344), (7, 94975960), (8, 83103965), (10, 66483172), (14, 47487980), (20, 33241586), (28, 23743990), (35, 18995192), (40, 16620793), (56, 11871995), (70, 9497596), (140, 4748798), (280, 2374399)]