221853320

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{426641}}^1$

素因数の和:426665

約数の個数: 32

約数和(自身を含む): 537568920

約数和(自身を除く): 315715600

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 426641, 853282, 1706564, 2133205, 3413128, 4266410, 5546333, 8532820, 11092666, 17065640, 22185332, 27731665, 44370664, 55463330, 110926660, 221853320]

約数ペア:

[(1, 221853320), (2, 110926660), (4, 55463330), (5, 44370664), (8, 27731665), (10, 22185332), (13, 17065640), (20, 11092666), (26, 8532820), (40, 5546333), (52, 4266410), (65, 3413128), (104, 2133205), (130, 1706564), (260, 853282), (520, 426641)]