21194760

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{347}}^1\times {\mathrm{509}}^1$

素因数の和:870

約数の個数: 64

約数和(自身を含む): 63892800

約数和(自身を除く): 42698040

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 347, 509, 694, 1018, 1041, 1388, 1527, 1735, 2036, 2082, 2545, 2776, 3054, 3470, 4072, 4164, 5090, 5205, 6108, 6940, 7635, 8328, 10180, 10410, 12216, 13880, 15270, 20360, 20820, 30540, 41640, 61080, 176623, 353246, 529869, 706492, 883115, 1059738, 1412984, 1766230, 2119476, 2649345, 3532460, 4238952, 5298690, 7064920, 10597380, 21194760]

約数ペア:

[(1, 21194760), (2, 10597380), (3, 7064920), (4, 5298690), (5, 4238952), (6, 3532460), (8, 2649345), (10, 2119476), (12, 1766230), (15, 1412984), (20, 1059738), (24, 883115), (30, 706492), (40, 529869), (60, 353246), (120, 176623), (347, 61080), (509, 41640), (694, 30540), (1018, 20820), (1041, 20360), (1388, 15270), (1527, 13880), (1735, 12216), (2036, 10410), (2082, 10180), (2545, 8328), (2776, 7635), (3054, 6940), (3470, 6108), (4072, 5205), (4164, 5090)]