155280321

素因数分解:

$3^4\times 7^1\times {\mathrm{137}}^1\times {\mathrm{1999}}^1$

素因数の和:2155

約数の個数: 40

約数和(自身を含む): 267168000

約数和(自身を除く): 111887679

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 137, 189, 411, 567, 959, 1233, 1999, 2877, 3699, 5997, 8631, 11097, 13993, 17991, 25893, 41979, 53973, 77679, 125937, 161919, 273863, 377811, 821589, 1133433, 1917041, 2464767, 5751123, 7394301, 17253369, 22182903, 51760107, 155280321]

約数ペア:

[(1, 155280321), (3, 51760107), (7, 22182903), (9, 17253369), (21, 7394301), (27, 5751123), (63, 2464767), (81, 1917041), (137, 1133433), (189, 821589), (411, 377811), (567, 273863), (959, 161919), (1233, 125937), (1999, 77679), (2877, 53973), (3699, 41979), (5997, 25893), (8631, 17991), (11097, 13993)]