21094218

素因数分解:

$2^1\times 3^2\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{1667}}^1$

素因数の和:1731

約数の個数: 48

約数和(自身を含む): 49439520

約数和(自身を除く): 28345302

約数列:

[1, 2, 3, 6, 9, 18, 19, 37, 38, 57, 74, 111, 114, 171, 222, 333, 342, 666, 703, 1406, 1667, 2109, 3334, 4218, 5001, 6327, 10002, 12654, 15003, 30006, 31673, 61679, 63346, 95019, 123358, 185037, 190038, 285057, 370074, 555111, 570114, 1110222, 1171901, 2343802, 3515703, 7031406, 10547109, 21094218]

約数ペア:

[(1, 21094218), (2, 10547109), (3, 7031406), (6, 3515703), (9, 2343802), (18, 1171901), (19, 1110222), (37, 570114), (38, 555111), (57, 370074), (74, 285057), (111, 190038), (114, 185037), (171, 123358), (222, 95019), (333, 63346), (342, 61679), (666, 31673), (703, 30006), (1406, 15003), (1667, 12654), (2109, 10002), (3334, 6327), (4218, 5001)]