140049620

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{137}}^1\times {\mathrm{647}}^1$

素因数の和:872

約数の個数: 48

約数和(自身を含む): 300464640

約数和(自身を除く): 160415020

約数列:

[1, 2, 4, 5, 10, 20, 79, 137, 158, 274, 316, 395, 548, 647, 685, 790, 1294, 1370, 1580, 2588, 2740, 3235, 6470, 10823, 12940, 21646, 43292, 51113, 54115, 88639, 102226, 108230, 177278, 204452, 216460, 255565, 354556, 443195, 511130, 886390, 1022260, 1772780, 7002481, 14004962, 28009924, 35012405, 70024810, 140049620]

約数ペア:

[(1, 140049620), (2, 70024810), (4, 35012405), (5, 28009924), (10, 14004962), (20, 7002481), (79, 1772780), (137, 1022260), (158, 886390), (274, 511130), (316, 443195), (395, 354556), (548, 255565), (647, 216460), (685, 204452), (790, 177278), (1294, 108230), (1370, 102226), (1580, 88639), (2588, 54115), (2740, 51113), (3235, 43292), (6470, 21646), (10823, 12940)]