81178020

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{5857}}^1$

素因数の和:5890

約数の個数: 144

約数和(自身を含む): 307052928

約数和(自身を除く): 225874908

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 11, 12, 14, 15, 18, 20, 21, 22, 28, 30, 33, 35, 36, 42, 44, 45, 55, 60, 63, 66, 70, 77, 84, 90, 99, 105, 110, 126, 132, 140, 154, 165, 180, 198, 210, 220, 231, 252, 308, 315, 330, 385, 396, 420, 462, 495, 630, 660, 693, 770, 924, 990, 1155, 1260, 1386, 1540, 1980, 2310, 2772, 3465, 4620, 5857, 6930, 11714, 13860, 17571, 23428, 29285, 35142, 40999, 52713, 58570, 64427, 70284, 81998, 87855, 105426, 117140, 122997, 128854, 163996, 175710, 193281, 204995, 210852, 245994, 257708, 263565, 322135, 351420, 368991, 386562, 409990, 450989, 491988, 527130, 579843, 614985, 644270, 737982, 773124, 819980, 901978, 966405, 1054260, 1159686, 1229970, 1288540, 1352967, 1475964, 1803956, 1844955, 1932810, 2254945, 2319372, 2459940, 2705934, 2899215, 3689910, 3865620, 4058901, 4509890, 5411868, 5798430, 6764835, 7379820, 8117802, 9019780, 11596860, 13529670, 16235604, 20294505, 27059340, 40589010, 81178020]

約数ペア:

[(1, 81178020), (2, 40589010), (3, 27059340), (4, 20294505), (5, 16235604), (6, 13529670), (7, 11596860), (9, 9019780), (10, 8117802), (11, 7379820), (12, 6764835), (14, 5798430), (15, 5411868), (18, 4509890), (20, 4058901), (21, 3865620), (22, 3689910), (28, 2899215), (30, 2705934), (33, 2459940), (35, 2319372), (36, 2254945), (42, 1932810), (44, 1844955), (45, 1803956), (55, 1475964), (60, 1352967), (63, 1288540), (66, 1229970), (70, 1159686), (77, 1054260), (84, 966405), (90, 901978), (99, 819980), (105, 773124), (110, 737982), (126, 644270), (132, 614985), (140, 579843), (154, 527130), (165, 491988), (180, 450989), (198, 409990), (210, 386562), (220, 368991), (231, 351420), (252, 322135), (308, 263565), (315, 257708), (330, 245994), (385, 210852), (396, 204995), (420, 193281), (462, 175710), (495, 163996), (630, 128854), (660, 122997), (693, 117140), (770, 105426), (924, 87855), (990, 81998), (1155, 70284), (1260, 64427), (1386, 58570), (1540, 52713), (1980, 40999), (2310, 35142), (2772, 29285), (3465, 23428), (4620, 17571), (5857, 13860), (6930, 11714)]