21124051

素因数分解:

${\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1$

素因数の和:163

約数の個数: 32

約数和(自身を含む): 25546752

約数和(自身を除く): 4422701

約数列:

[1, 13, 23, 31, 43, 53, 299, 403, 559, 689, 713, 989, 1219, 1333, 1643, 2279, 9269, 12857, 15847, 17329, 21359, 29627, 30659, 37789, 52417, 70649, 398567, 491257, 681421, 918437, 1624927, 21124051]

約数ペア:

[(1, 21124051), (13, 1624927), (23, 918437), (31, 681421), (43, 491257), (53, 398567), (299, 70649), (403, 52417), (559, 37789), (689, 30659), (713, 29627), (989, 21359), (1219, 17329), (1333, 15847), (1643, 12857), (2279, 9269)]