1271304040

素因数分解:

$2^3\times 5^1\times {\mathrm{197}}^1\times {\mathrm{161333}}^1$

素因数の和:161541

約数の個数: 32

約数和(自身を含む): 2874971880

約数和(自身を除く): 1603667840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 197, 394, 788, 985, 1576, 1970, 3940, 7880, 161333, 322666, 645332, 806665, 1290664, 1613330, 3226660, 6453320, 31782601, 63565202, 127130404, 158913005, 254260808, 317826010, 635652020, 1271304040]

約数ペア:

[(1, 1271304040), (2, 635652020), (4, 317826010), (5, 254260808), (8, 158913005), (10, 127130404), (20, 63565202), (40, 31782601), (197, 6453320), (394, 3226660), (788, 1613330), (985, 1290664), (1576, 806665), (1970, 645332), (3940, 322666), (7880, 161333)]