64643540

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{2281}}^1$

素因数の和:2412

約数の個数: 48

約数和(自身を含む): 147599760

約数和(自身を除く): 82956220

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 109, 130, 218, 260, 436, 545, 1090, 1417, 2180, 2281, 2834, 4562, 5668, 7085, 9124, 11405, 14170, 22810, 28340, 29653, 45620, 59306, 118612, 148265, 248629, 296530, 497258, 593060, 994516, 1243145, 2486290, 3232177, 4972580, 6464354, 12928708, 16160885, 32321770, 64643540]

約数ペア:

[(1, 64643540), (2, 32321770), (4, 16160885), (5, 12928708), (10, 6464354), (13, 4972580), (20, 3232177), (26, 2486290), (52, 1243145), (65, 994516), (109, 593060), (130, 497258), (218, 296530), (260, 248629), (436, 148265), (545, 118612), (1090, 59306), (1417, 45620), (2180, 29653), (2281, 28340), (2834, 22810), (4562, 14170), (5668, 11405), (7085, 9124)]