121278440

素因数分解:

$2^3\times 5^1\times {\mathrm{401}}^1\times {\mathrm{7561}}^1$

素因数の和:7973

約数の個数: 32

約数和(自身を含む): 273593160

約数和(自身を除く): 152314720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 401, 802, 1604, 2005, 3208, 4010, 7561, 8020, 15122, 16040, 30244, 37805, 60488, 75610, 151220, 302440, 3031961, 6063922, 12127844, 15159805, 24255688, 30319610, 60639220, 121278440]

約数ペア:

[(1, 121278440), (2, 60639220), (4, 30319610), (5, 24255688), (8, 15159805), (10, 12127844), (20, 6063922), (40, 3031961), (401, 302440), (802, 151220), (1604, 75610), (2005, 60488), (3208, 37805), (4010, 30244), (7561, 16040), (8020, 15122)]