21800030

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{443}}^1$

素因数の和:513

約数の個数: 64

約数和(自身を含む): 48591360

約数和(自身を除く): 26791330

約数列:

[1, 2, 5, 7, 10, 14, 19, 35, 37, 38, 70, 74, 95, 133, 185, 190, 259, 266, 370, 443, 518, 665, 703, 886, 1295, 1330, 1406, 2215, 2590, 3101, 3515, 4430, 4921, 6202, 7030, 8417, 9842, 15505, 16391, 16834, 24605, 31010, 32782, 42085, 49210, 58919, 81955, 84170, 114737, 117838, 163910, 229474, 294595, 311429, 573685, 589190, 622858, 1147370, 1557145, 2180003, 3114290, 4360006, 10900015, 21800030]

約数ペア:

[(1, 21800030), (2, 10900015), (5, 4360006), (7, 3114290), (10, 2180003), (14, 1557145), (19, 1147370), (35, 622858), (37, 589190), (38, 573685), (70, 311429), (74, 294595), (95, 229474), (133, 163910), (185, 117838), (190, 114737), (259, 84170), (266, 81955), (370, 58919), (443, 49210), (518, 42085), (665, 32782), (703, 31010), (886, 24605), (1295, 16834), (1330, 16391), (1406, 15505), (2215, 9842), (2590, 8417), (3101, 7030), (3515, 6202), (4430, 4921)]