81276340

素因数分解:

$2^2\times 5^1\times {\mathrm{1907}}^1\times {\mathrm{2131}}^1$

素因数の和:4047

約数の個数: 24

約数和(自身を含む): 170849952

約数和(自身を除く): 89573612

約数列:

[1, 2, 4, 5, 10, 20, 1907, 2131, 3814, 4262, 7628, 8524, 9535, 10655, 19070, 21310, 38140, 42620, 4063817, 8127634, 16255268, 20319085, 40638170, 81276340]

約数ペア:

[(1, 81276340), (2, 40638170), (4, 20319085), (5, 16255268), (10, 8127634), (20, 4063817), (1907, 42620), (2131, 38140), (3814, 21310), (4262, 19070), (7628, 10655), (8524, 9535)]