21281880

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{67}}^1\times {\mathrm{2647}}^1$

素因数の和:2728

約数の個数: 64

約数和(自身を含む): 64823040

約数和(自身を除く): 43541160

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 67, 120, 134, 201, 268, 335, 402, 536, 670, 804, 1005, 1340, 1608, 2010, 2647, 2680, 4020, 5294, 7941, 8040, 10588, 13235, 15882, 21176, 26470, 31764, 39705, 52940, 63528, 79410, 105880, 158820, 177349, 317640, 354698, 532047, 709396, 886745, 1064094, 1418792, 1773490, 2128188, 2660235, 3546980, 4256376, 5320470, 7093960, 10640940, 21281880]

約数ペア:

[(1, 21281880), (2, 10640940), (3, 7093960), (4, 5320470), (5, 4256376), (6, 3546980), (8, 2660235), (10, 2128188), (12, 1773490), (15, 1418792), (20, 1064094), (24, 886745), (30, 709396), (40, 532047), (60, 354698), (67, 317640), (120, 177349), (134, 158820), (201, 105880), (268, 79410), (335, 63528), (402, 52940), (536, 39705), (670, 31764), (804, 26470), (1005, 21176), (1340, 15882), (1608, 13235), (2010, 10588), (2647, 8040), (2680, 7941), (4020, 5294)]