81768940

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{443}}^1\times {\mathrm{839}}^1$

素因数の和:1302

約数の個数: 48

約数和(自身を含む): 187971840

約数和(自身を除く): 106202900

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 443, 839, 886, 1678, 1772, 2215, 3356, 4195, 4430, 4873, 8390, 8860, 9229, 9746, 16780, 18458, 19492, 24365, 36916, 46145, 48730, 92290, 97460, 184580, 371677, 743354, 1486708, 1858385, 3716770, 4088447, 7433540, 8176894, 16353788, 20442235, 40884470, 81768940]

約数ペア:

[(1, 81768940), (2, 40884470), (4, 20442235), (5, 16353788), (10, 8176894), (11, 7433540), (20, 4088447), (22, 3716770), (44, 1858385), (55, 1486708), (110, 743354), (220, 371677), (443, 184580), (839, 97460), (886, 92290), (1678, 48730), (1772, 46145), (2215, 36916), (3356, 24365), (4195, 19492), (4430, 18458), (4873, 16780), (8390, 9746), (8860, 9229)]