645260

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{419}}^1$

素因数の和:446

約数の個数: 48

約数和(自身を含む): 1693440

約数和(自身を除く): 1048180

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 140, 154, 220, 308, 385, 419, 770, 838, 1540, 1676, 2095, 2933, 4190, 4609, 5866, 8380, 9218, 11732, 14665, 18436, 23045, 29330, 32263, 46090, 58660, 64526, 92180, 129052, 161315, 322630, 645260]

約数ペア:

[(1, 645260), (2, 322630), (4, 161315), (5, 129052), (7, 92180), (10, 64526), (11, 58660), (14, 46090), (20, 32263), (22, 29330), (28, 23045), (35, 18436), (44, 14665), (55, 11732), (70, 9218), (77, 8380), (110, 5866), (140, 4609), (154, 4190), (220, 2933), (308, 2095), (385, 1676), (419, 1540), (770, 838)]