2478260

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{197}}^1$

素因数の和:260

約数の個数: 48

約数和(自身を含む): 5688144

約数和(自身を除く): 3209884

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 37, 68, 74, 85, 148, 170, 185, 197, 340, 370, 394, 629, 740, 788, 985, 1258, 1970, 2516, 3145, 3349, 3940, 6290, 6698, 7289, 12580, 13396, 14578, 16745, 29156, 33490, 36445, 66980, 72890, 123913, 145780, 247826, 495652, 619565, 1239130, 2478260]

約数ペア:

[(1, 2478260), (2, 1239130), (4, 619565), (5, 495652), (10, 247826), (17, 145780), (20, 123913), (34, 72890), (37, 66980), (68, 36445), (74, 33490), (85, 29156), (148, 16745), (170, 14578), (185, 13396), (197, 12580), (340, 7289), (370, 6698), (394, 6290), (629, 3940), (740, 3349), (788, 3145), (985, 2516), (1258, 1970)]