8281820

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{109}}^1\times {\mathrm{131}}^1$

素因数の和:278

約数の個数: 48

約数和(自身を含む): 18295200

約数和(自身を除く): 10013380

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 109, 116, 131, 145, 218, 262, 290, 436, 524, 545, 580, 655, 1090, 1310, 2180, 2620, 3161, 3799, 6322, 7598, 12644, 14279, 15196, 15805, 18995, 28558, 31610, 37990, 57116, 63220, 71395, 75980, 142790, 285580, 414091, 828182, 1656364, 2070455, 4140910, 8281820]

約数ペア:

[(1, 8281820), (2, 4140910), (4, 2070455), (5, 1656364), (10, 828182), (20, 414091), (29, 285580), (58, 142790), (109, 75980), (116, 71395), (131, 63220), (145, 57116), (218, 37990), (262, 31610), (290, 28558), (436, 18995), (524, 15805), (545, 15196), (580, 14279), (655, 12644), (1090, 7598), (1310, 6322), (2180, 3799), (2620, 3161)]