639804550

素因数分解:

$2^1\times 5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{166183}}^1$

素因数の和:166213

約数の個数: 48

約数和(自身を含む): 1483690752

約数和(自身を除く): 843886202

約数列:

[1, 2, 5, 7, 10, 11, 14, 22, 25, 35, 50, 55, 70, 77, 110, 154, 175, 275, 350, 385, 550, 770, 1925, 3850, 166183, 332366, 830915, 1163281, 1661830, 1828013, 2326562, 3656026, 4154575, 5816405, 8309150, 9140065, 11632810, 12796091, 18280130, 25592182, 29082025, 45700325, 58164050, 63980455, 91400650, 127960910, 319902275, 639804550]

約数ペア:

[(1, 639804550), (2, 319902275), (5, 127960910), (7, 91400650), (10, 63980455), (11, 58164050), (14, 45700325), (22, 29082025), (25, 25592182), (35, 18280130), (50, 12796091), (55, 11632810), (70, 9140065), (77, 8309150), (110, 5816405), (154, 4154575), (175, 3656026), (275, 2326562), (350, 1828013), (385, 1661830), (550, 1163281), (770, 830915), (1925, 332366), (3850, 166183)]