21380436

素因数分解:

$2^2\times 3^4\times 7^1\times {\mathrm{11}}^1\times {\mathrm{857}}^1$

素因数の和:891

約数の個数: 120

約数和(自身を含む): 69765696

約数和(自身を除く): 48385260

約数列:

[1, 2, 3, 4, 6, 7, 9, 11, 12, 14, 18, 21, 22, 27, 28, 33, 36, 42, 44, 54, 63, 66, 77, 81, 84, 99, 108, 126, 132, 154, 162, 189, 198, 231, 252, 297, 308, 324, 378, 396, 462, 567, 594, 693, 756, 857, 891, 924, 1134, 1188, 1386, 1714, 1782, 2079, 2268, 2571, 2772, 3428, 3564, 4158, 5142, 5999, 6237, 7713, 8316, 9427, 10284, 11998, 12474, 15426, 17997, 18854, 23139, 23996, 24948, 28281, 30852, 35994, 37708, 46278, 53991, 56562, 65989, 69417, 71988, 84843, 92556, 107982, 113124, 131978, 138834, 161973, 169686, 197967, 215964, 254529, 263956, 277668, 323946, 339372, 395934, 485919, 509058, 593901, 647892, 763587, 791868, 971838, 1018116, 1187802, 1527174, 1781703, 1943676, 2375604, 3054348, 3563406, 5345109, 7126812, 10690218, 21380436]

約数ペア:

[(1, 21380436), (2, 10690218), (3, 7126812), (4, 5345109), (6, 3563406), (7, 3054348), (9, 2375604), (11, 1943676), (12, 1781703), (14, 1527174), (18, 1187802), (21, 1018116), (22, 971838), (27, 791868), (28, 763587), (33, 647892), (36, 593901), (42, 509058), (44, 485919), (54, 395934), (63, 339372), (66, 323946), (77, 277668), (81, 263956), (84, 254529), (99, 215964), (108, 197967), (126, 169686), (132, 161973), (154, 138834), (162, 131978), (189, 113124), (198, 107982), (231, 92556), (252, 84843), (297, 71988), (308, 69417), (324, 65989), (378, 56562), (396, 53991), (462, 46278), (567, 37708), (594, 35994), (693, 30852), (756, 28281), (857, 24948), (891, 23996), (924, 23139), (1134, 18854), (1188, 17997), (1386, 15426), (1714, 12474), (1782, 11998), (2079, 10284), (2268, 9427), (2571, 8316), (2772, 7713), (3428, 6237), (3564, 5999), (4158, 5142)]