28697480

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{113}}^1\times {\mathrm{907}}^1$

素因数の和:1038

約数の個数: 64

約数和(自身を含む): 74528640

約数和(自身を除く): 45831160

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 113, 140, 226, 280, 452, 565, 791, 904, 907, 1130, 1582, 1814, 2260, 3164, 3628, 3955, 4520, 4535, 6328, 6349, 7256, 7910, 9070, 12698, 15820, 18140, 25396, 31640, 31745, 36280, 50792, 63490, 102491, 126980, 204982, 253960, 409964, 512455, 717437, 819928, 1024910, 1434874, 2049820, 2869748, 3587185, 4099640, 5739496, 7174370, 14348740, 28697480]

約数ペア:

[(1, 28697480), (2, 14348740), (4, 7174370), (5, 5739496), (7, 4099640), (8, 3587185), (10, 2869748), (14, 2049820), (20, 1434874), (28, 1024910), (35, 819928), (40, 717437), (56, 512455), (70, 409964), (113, 253960), (140, 204982), (226, 126980), (280, 102491), (452, 63490), (565, 50792), (791, 36280), (904, 31745), (907, 31640), (1130, 25396), (1582, 18140), (1814, 15820), (2260, 12698), (3164, 9070), (3628, 7910), (3955, 7256), (4520, 6349), (4535, 6328)]