28923980

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{20369}}^1$

素因数の和:20449

約数の個数: 24

約数和(自身を含む): 61598880

約数和(自身を除く): 32674900

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 20369, 40738, 81476, 101845, 203690, 407380, 1446199, 2892398, 5784796, 7230995, 14461990, 28923980]

約数ペア:

[(1, 28923980), (2, 14461990), (4, 7230995), (5, 5784796), (10, 2892398), (20, 1446199), (71, 407380), (142, 203690), (284, 101845), (355, 81476), (710, 40738), (1420, 20369)]