18180105040

素因数分解:

$2^4\times 5^1\times {\mathrm{101}}^1\times {\mathrm{2250013}}^1$

素因数の和:2250127

約数の個数: 40

約数和(自身を含む): 42687265608

約数和(自身を除く): 24507160568

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 101, 202, 404, 505, 808, 1010, 1616, 2020, 4040, 8080, 2250013, 4500026, 9000052, 11250065, 18000104, 22500130, 36000208, 45000260, 90000520, 180001040, 227251313, 454502626, 909005252, 1136256565, 1818010504, 2272513130, 3636021008, 4545026260, 9090052520, 18180105040]

約数ペア:

[(1, 18180105040), (2, 9090052520), (4, 4545026260), (5, 3636021008), (8, 2272513130), (10, 1818010504), (16, 1136256565), (20, 909005252), (40, 454502626), (80, 227251313), (101, 180001040), (202, 90000520), (404, 45000260), (505, 36000208), (808, 22500130), (1010, 18000104), (1616, 11250065), (2020, 9000052), (4040, 4500026), (8080, 2250013)]