642784

素因数分解:

$2^5\times {\mathrm{53}}^1\times {\mathrm{379}}^1$

素因数の和:442

約数の個数: 24

約数和(自身を含む): 1292760

約数和(自身を除く): 649976

約数列:

[1, 2, 4, 8, 16, 32, 53, 106, 212, 379, 424, 758, 848, 1516, 1696, 3032, 6064, 12128, 20087, 40174, 80348, 160696, 321392, 642784]

約数ペア:

[(1, 642784), (2, 321392), (4, 160696), (8, 80348), (16, 40174), (32, 20087), (53, 12128), (106, 6064), (212, 3032), (379, 1696), (424, 1516), (758, 848)]