21494473

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{197}}^1$

素因数の和:337

約数の個数: 32

約数和(自身を含む): 29272320

約数和(自身を除く): 7777847

約数列:

[1, 7, 11, 13, 77, 91, 109, 143, 197, 763, 1001, 1199, 1379, 1417, 2167, 2561, 8393, 9919, 15169, 15587, 17927, 21473, 28171, 109109, 150311, 197197, 236203, 279149, 1653421, 1954043, 3070639, 21494473]

約数ペア:

[(1, 21494473), (7, 3070639), (11, 1954043), (13, 1653421), (77, 279149), (91, 236203), (109, 197197), (143, 150311), (197, 109109), (763, 28171), (1001, 21473), (1199, 17927), (1379, 15587), (1417, 15169), (2167, 9919), (2561, 8393)]