21667840

素因数分解:

$2^{13}\times 5^1\times {\mathrm{23}}^2$

素因数の和:77

約数の個数: 84

約数和(自身を含む): 54358794

約数和(自身を除く): 32690954

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 32, 40, 46, 64, 80, 92, 115, 128, 160, 184, 230, 256, 320, 368, 460, 512, 529, 640, 736, 920, 1024, 1058, 1280, 1472, 1840, 2048, 2116, 2560, 2645, 2944, 3680, 4096, 4232, 5120, 5290, 5888, 7360, 8192, 8464, 10240, 10580, 11776, 14720, 16928, 20480, 21160, 23552, 29440, 33856, 40960, 42320, 47104, 58880, 67712, 84640, 94208, 117760, 135424, 169280, 188416, 235520, 270848, 338560, 471040, 541696, 677120, 942080, 1083392, 1354240, 2166784, 2708480, 4333568, 5416960, 10833920, 21667840]

約数ペア:

[(1, 21667840), (2, 10833920), (4, 5416960), (5, 4333568), (8, 2708480), (10, 2166784), (16, 1354240), (20, 1083392), (23, 942080), (32, 677120), (40, 541696), (46, 471040), (64, 338560), (80, 270848), (92, 235520), (115, 188416), (128, 169280), (160, 135424), (184, 117760), (230, 94208), (256, 84640), (320, 67712), (368, 58880), (460, 47104), (512, 42320), (529, 40960), (640, 33856), (736, 29440), (920, 23552), (1024, 21160), (1058, 20480), (1280, 16928), (1472, 14720), (1840, 11776), (2048, 10580), (2116, 10240), (2560, 8464), (2645, 8192), (2944, 7360), (3680, 5888), (4096, 5290), (4232, 5120)]