78868640

素因数分解:

$2^5\times 5^1\times {\mathrm{641}}^1\times {\mathrm{769}}^1$

素因数の和:1425

約数の個数: 48

約数和(自身を含む): 186860520

約数和(自身を除く): 107991880

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 641, 769, 1282, 1538, 2564, 3076, 3205, 3845, 5128, 6152, 6410, 7690, 10256, 12304, 12820, 15380, 20512, 24608, 25640, 30760, 51280, 61520, 102560, 123040, 492929, 985858, 1971716, 2464645, 3943432, 4929290, 7886864, 9858580, 15773728, 19717160, 39434320, 78868640]

約数ペア:

[(1, 78868640), (2, 39434320), (4, 19717160), (5, 15773728), (8, 9858580), (10, 7886864), (16, 4929290), (20, 3943432), (32, 2464645), (40, 1971716), (80, 985858), (160, 492929), (641, 123040), (769, 102560), (1282, 61520), (1538, 51280), (2564, 30760), (3076, 25640), (3205, 24608), (3845, 20512), (5128, 15380), (6152, 12820), (6410, 12304), (7690, 10256)]