22720520

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{73}}^1\times {\mathrm{251}}^1$

素因数の和:366

約数の個数: 64

約数和(自身を含む): 53706240

約数和(自身を除く): 30985720

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 73, 124, 146, 155, 248, 251, 292, 310, 365, 502, 584, 620, 730, 1004, 1240, 1255, 1460, 2008, 2263, 2510, 2920, 4526, 5020, 7781, 9052, 10040, 11315, 15562, 18104, 18323, 22630, 31124, 36646, 38905, 45260, 62248, 73292, 77810, 90520, 91615, 146584, 155620, 183230, 311240, 366460, 568013, 732920, 1136026, 2272052, 2840065, 4544104, 5680130, 11360260, 22720520]

約数ペア:

[(1, 22720520), (2, 11360260), (4, 5680130), (5, 4544104), (8, 2840065), (10, 2272052), (20, 1136026), (31, 732920), (40, 568013), (62, 366460), (73, 311240), (124, 183230), (146, 155620), (155, 146584), (248, 91615), (251, 90520), (292, 77810), (310, 73292), (365, 62248), (502, 45260), (584, 38905), (620, 36646), (730, 31124), (1004, 22630), (1240, 18323), (1255, 18104), (1460, 15562), (2008, 11315), (2263, 10040), (2510, 9052), (2920, 7781), (4526, 5020)]