1339558840

素因数分解:

$2^3\times 5^1\times {\mathrm{131}}^1\times {\mathrm{255641}}^1$

素因数の和:255783

約数の個数: 32

約数和(自身を含む): 3037026960

約数和(自身を除く): 1697468120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 131, 262, 524, 655, 1048, 1310, 2620, 5240, 255641, 511282, 1022564, 1278205, 2045128, 2556410, 5112820, 10225640, 33488971, 66977942, 133955884, 167444855, 267911768, 334889710, 669779420, 1339558840]

約数ペア:

[(1, 1339558840), (2, 669779420), (4, 334889710), (5, 267911768), (8, 167444855), (10, 133955884), (20, 66977942), (40, 33488971), (131, 10225640), (262, 5112820), (524, 2556410), (655, 2045128), (1048, 1278205), (1310, 1022564), (2620, 511282), (5240, 255641)]