20181700

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{2621}}^1$

素因数の和:2653

約数の個数: 72

約数和(自身を含む): 54621504

約数和(自身を除く): 34439804

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 25, 28, 35, 44, 50, 55, 70, 77, 100, 110, 140, 154, 175, 220, 275, 308, 350, 385, 550, 700, 770, 1100, 1540, 1925, 2621, 3850, 5242, 7700, 10484, 13105, 18347, 26210, 28831, 36694, 52420, 57662, 65525, 73388, 91735, 115324, 131050, 144155, 183470, 201817, 262100, 288310, 366940, 403634, 458675, 576620, 720775, 807268, 917350, 1009085, 1441550, 1834700, 2018170, 2883100, 4036340, 5045425, 10090850, 20181700]

約数ペア:

[(1, 20181700), (2, 10090850), (4, 5045425), (5, 4036340), (7, 2883100), (10, 2018170), (11, 1834700), (14, 1441550), (20, 1009085), (22, 917350), (25, 807268), (28, 720775), (35, 576620), (44, 458675), (50, 403634), (55, 366940), (70, 288310), (77, 262100), (100, 201817), (110, 183470), (140, 144155), (154, 131050), (175, 115324), (220, 91735), (275, 73388), (308, 65525), (350, 57662), (385, 52420), (550, 36694), (700, 28831), (770, 26210), (1100, 18347), (1540, 13105), (1925, 10484), (2621, 7700), (3850, 5242)]