1280940

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{577}}^1$

素因数の和:626

約数の個数: 48

約数和(自身を含む): 3689952

約数和(自身を除く): 2409012

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 37, 60, 74, 111, 148, 185, 222, 370, 444, 555, 577, 740, 1110, 1154, 1731, 2220, 2308, 2885, 3462, 5770, 6924, 8655, 11540, 17310, 21349, 34620, 42698, 64047, 85396, 106745, 128094, 213490, 256188, 320235, 426980, 640470, 1280940]

約数ペア:

[(1, 1280940), (2, 640470), (3, 426980), (4, 320235), (5, 256188), (6, 213490), (10, 128094), (12, 106745), (15, 85396), (20, 64047), (30, 42698), (37, 34620), (60, 21349), (74, 17310), (111, 11540), (148, 8655), (185, 6924), (222, 5770), (370, 3462), (444, 2885), (555, 2308), (577, 2220), (740, 1731), (1110, 1154)]