280403780

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{631}}^1\times {\mathrm{1307}}^1$

素因数の和:1964

約数の個数: 48

約数和(自身を含む): 624951936

約数和(自身を除く): 344548156

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 631, 1262, 1307, 2524, 2614, 3155, 5228, 6310, 6535, 10727, 12620, 13070, 21454, 22219, 26140, 42908, 44438, 53635, 88876, 107270, 111095, 214540, 222190, 444380, 824717, 1649434, 3298868, 4123585, 8247170, 14020189, 16494340, 28040378, 56080756, 70100945, 140201890, 280403780]

約数ペア:

[(1, 280403780), (2, 140201890), (4, 70100945), (5, 56080756), (10, 28040378), (17, 16494340), (20, 14020189), (34, 8247170), (68, 4123585), (85, 3298868), (170, 1649434), (340, 824717), (631, 444380), (1262, 222190), (1307, 214540), (2524, 111095), (2614, 107270), (3155, 88876), (5228, 53635), (6310, 44438), (6535, 42908), (10727, 26140), (12620, 22219), (13070, 21454)]