919332020

素因数分解:

$2^2\times 5^1\times {\mathrm{197}}^1\times {\mathrm{353}}^1\times {\mathrm{661}}^1$

素因数の和:1220

約数の個数: 48

約数和(自身を含む): 1948837968

約数和(自身を除く): 1029505948

約数列:

[1, 2, 4, 5, 10, 20, 197, 353, 394, 661, 706, 788, 985, 1322, 1412, 1765, 1970, 2644, 3305, 3530, 3940, 6610, 7060, 13220, 69541, 130217, 139082, 233333, 260434, 278164, 347705, 466666, 520868, 651085, 695410, 933332, 1166665, 1302170, 1390820, 2333330, 2604340, 4666660, 45966601, 91933202, 183866404, 229833005, 459666010, 919332020]

約数ペア:

[(1, 919332020), (2, 459666010), (4, 229833005), (5, 183866404), (10, 91933202), (20, 45966601), (197, 4666660), (353, 2604340), (394, 2333330), (661, 1390820), (706, 1302170), (788, 1166665), (985, 933332), (1322, 695410), (1412, 651085), (1765, 520868), (1970, 466666), (2644, 347705), (3305, 278164), (3530, 260434), (3940, 233333), (6610, 139082), (7060, 130217), (13220, 69541)]