39971680

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{401}}^1$

素因数の和:512

約数の個数: 96

約数和(自身を含む): 109408320

約数和(自身を除く): 69436640

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 70, 80, 89, 112, 140, 160, 178, 224, 280, 356, 401, 445, 560, 623, 712, 802, 890, 1120, 1246, 1424, 1604, 1780, 2005, 2492, 2807, 2848, 3115, 3208, 3560, 4010, 4984, 5614, 6230, 6416, 7120, 8020, 9968, 11228, 12460, 12832, 14035, 14240, 16040, 19936, 22456, 24920, 28070, 32080, 35689, 44912, 49840, 56140, 64160, 71378, 89824, 99680, 112280, 142756, 178445, 224560, 249823, 285512, 356890, 449120, 499646, 571024, 713780, 999292, 1142048, 1249115, 1427560, 1998584, 2498230, 2855120, 3997168, 4996460, 5710240, 7994336, 9992920, 19985840, 39971680]

約数ペア:

[(1, 39971680), (2, 19985840), (4, 9992920), (5, 7994336), (7, 5710240), (8, 4996460), (10, 3997168), (14, 2855120), (16, 2498230), (20, 1998584), (28, 1427560), (32, 1249115), (35, 1142048), (40, 999292), (56, 713780), (70, 571024), (80, 499646), (89, 449120), (112, 356890), (140, 285512), (160, 249823), (178, 224560), (224, 178445), (280, 142756), (356, 112280), (401, 99680), (445, 89824), (560, 71378), (623, 64160), (712, 56140), (802, 49840), (890, 44912), (1120, 35689), (1246, 32080), (1424, 28070), (1604, 24920), (1780, 22456), (2005, 19936), (2492, 16040), (2807, 14240), (2848, 14035), (3115, 12832), (3208, 12460), (3560, 11228), (4010, 9968), (4984, 8020), (5614, 7120), (6230, 6416)]