20979240

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{79}}^1\times {\mathrm{2213}}^1$

素因数の和:2306

約数の個数: 64

約数和(自身を含む): 63763200

約数和(自身を除く): 42783960

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 79, 120, 158, 237, 316, 395, 474, 632, 790, 948, 1185, 1580, 1896, 2213, 2370, 3160, 4426, 4740, 6639, 8852, 9480, 11065, 13278, 17704, 22130, 26556, 33195, 44260, 53112, 66390, 88520, 132780, 174827, 265560, 349654, 524481, 699308, 874135, 1048962, 1398616, 1748270, 2097924, 2622405, 3496540, 4195848, 5244810, 6993080, 10489620, 20979240]

約数ペア:

[(1, 20979240), (2, 10489620), (3, 6993080), (4, 5244810), (5, 4195848), (6, 3496540), (8, 2622405), (10, 2097924), (12, 1748270), (15, 1398616), (20, 1048962), (24, 874135), (30, 699308), (40, 524481), (60, 349654), (79, 265560), (120, 174827), (158, 132780), (237, 88520), (316, 66390), (395, 53112), (474, 44260), (632, 33195), (790, 26556), (948, 22130), (1185, 17704), (1580, 13278), (1896, 11065), (2213, 9480), (2370, 8852), (3160, 6639), (4426, 4740)]