8143720

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{15661}}^1$

素因数の和:15685

約数の個数: 32

約数和(自身を含む): 19734120

約数和(自身を除く): 11590400

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 15661, 31322, 62644, 78305, 125288, 156610, 203593, 313220, 407186, 626440, 814372, 1017965, 1628744, 2035930, 4071860, 8143720]

約数ペア:

[(1, 8143720), (2, 4071860), (4, 2035930), (5, 1628744), (8, 1017965), (10, 814372), (13, 626440), (20, 407186), (26, 313220), (40, 203593), (52, 156610), (65, 125288), (104, 78305), (130, 62644), (260, 31322), (520, 15661)]