25156720

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{103}}^1$

素因数の和:230

約数の個数: 80

約数和(自身を含む): 61281792

約数和(自身を除く): 36125072

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 71, 80, 86, 103, 142, 172, 206, 215, 284, 344, 355, 412, 430, 515, 568, 688, 710, 824, 860, 1030, 1136, 1420, 1648, 1720, 2060, 2840, 3053, 3440, 4120, 4429, 5680, 6106, 7313, 8240, 8858, 12212, 14626, 15265, 17716, 22145, 24424, 29252, 30530, 35432, 36565, 44290, 48848, 58504, 61060, 70864, 73130, 88580, 117008, 122120, 146260, 177160, 244240, 292520, 314459, 354320, 585040, 628918, 1257836, 1572295, 2515672, 3144590, 5031344, 6289180, 12578360, 25156720]

約数ペア:

[(1, 25156720), (2, 12578360), (4, 6289180), (5, 5031344), (8, 3144590), (10, 2515672), (16, 1572295), (20, 1257836), (40, 628918), (43, 585040), (71, 354320), (80, 314459), (86, 292520), (103, 244240), (142, 177160), (172, 146260), (206, 122120), (215, 117008), (284, 88580), (344, 73130), (355, 70864), (412, 61060), (430, 58504), (515, 48848), (568, 44290), (688, 36565), (710, 35432), (824, 30530), (860, 29252), (1030, 24424), (1136, 22145), (1420, 17716), (1648, 15265), (1720, 14626), (2060, 12212), (2840, 8858), (3053, 8240), (3440, 7313), (4120, 6106), (4429, 5680)]