247178840

素因数分解:

$2^3\times 5^1\times {\mathrm{281}}^1\times {\mathrm{21991}}^1$

素因数の和:22283

約数の個数: 32

約数和(自身を含む): 558156960

約数和(自身を除く): 310978120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 281, 562, 1124, 1405, 2248, 2810, 5620, 11240, 21991, 43982, 87964, 109955, 175928, 219910, 439820, 879640, 6179471, 12358942, 24717884, 30897355, 49435768, 61794710, 123589420, 247178840]

約数ペア:

[(1, 247178840), (2, 123589420), (4, 61794710), (5, 49435768), (8, 30897355), (10, 24717884), (20, 12358942), (40, 6179471), (281, 879640), (562, 439820), (1124, 219910), (1405, 175928), (2248, 109955), (2810, 87964), (5620, 43982), (11240, 21991)]