21785704

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{8431}}^1$

素因数の和:8473

約数の個数: 32

約数和(自身を含む): 45532800

約数和(自身を除く): 23747096

約数列:

[1, 2, 4, 8, 17, 19, 34, 38, 68, 76, 136, 152, 323, 646, 1292, 2584, 8431, 16862, 33724, 67448, 143327, 160189, 286654, 320378, 573308, 640756, 1146616, 1281512, 2723213, 5446426, 10892852, 21785704]

約数ペア:

[(1, 21785704), (2, 10892852), (4, 5446426), (8, 2723213), (17, 1281512), (19, 1146616), (34, 640756), (38, 573308), (68, 320378), (76, 286654), (136, 160189), (152, 143327), (323, 67448), (646, 33724), (1292, 16862), (2584, 8431)]