21509512

素因数分解:

$2^3\times {\mathrm{59}}^1\times {\mathrm{199}}^1\times {\mathrm{229}}^1$

素因数の和:493

約数の個数: 32

約数和(自身を含む): 41400000

約数和(自身を除く): 19890488

約数列:

[1, 2, 4, 8, 59, 118, 199, 229, 236, 398, 458, 472, 796, 916, 1592, 1832, 11741, 13511, 23482, 27022, 45571, 46964, 54044, 91142, 93928, 108088, 182284, 364568, 2688689, 5377378, 10754756, 21509512]

約数ペア:

[(1, 21509512), (2, 10754756), (4, 5377378), (8, 2688689), (59, 364568), (118, 182284), (199, 108088), (229, 93928), (236, 91142), (398, 54044), (458, 46964), (472, 45571), (796, 27022), (916, 23482), (1592, 13511), (1832, 11741)]