820019160

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{20521}}^1$

素因数の和:20578

約数の個数: 128

約数和(自身を含む): 2807409600

約数和(自身を除く): 1987390440

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 27, 30, 36, 37, 40, 45, 54, 60, 72, 74, 90, 108, 111, 120, 135, 148, 180, 185, 216, 222, 270, 296, 333, 360, 370, 444, 540, 555, 666, 740, 888, 999, 1080, 1110, 1332, 1480, 1665, 1998, 2220, 2664, 3330, 3996, 4440, 4995, 6660, 7992, 9990, 13320, 19980, 20521, 39960, 41042, 61563, 82084, 102605, 123126, 164168, 184689, 205210, 246252, 307815, 369378, 410420, 492504, 554067, 615630, 738756, 759277, 820840, 923445, 1108134, 1231260, 1477512, 1518554, 1846890, 2216268, 2277831, 2462520, 2770335, 3037108, 3693780, 3796385, 4432536, 4555662, 5540670, 6074216, 6833493, 7387560, 7592770, 9111324, 11081340, 11389155, 13666986, 15185540, 18222648, 20500479, 22162680, 22778310, 27333972, 30371080, 34167465, 41000958, 45556620, 54667944, 68334930, 82001916, 91113240, 102502395, 136669860, 164003832, 205004790, 273339720, 410009580, 820019160]

約数ペア:

[(1, 820019160), (2, 410009580), (3, 273339720), (4, 205004790), (5, 164003832), (6, 136669860), (8, 102502395), (9, 91113240), (10, 82001916), (12, 68334930), (15, 54667944), (18, 45556620), (20, 41000958), (24, 34167465), (27, 30371080), (30, 27333972), (36, 22778310), (37, 22162680), (40, 20500479), (45, 18222648), (54, 15185540), (60, 13666986), (72, 11389155), (74, 11081340), (90, 9111324), (108, 7592770), (111, 7387560), (120, 6833493), (135, 6074216), (148, 5540670), (180, 4555662), (185, 4432536), (216, 3796385), (222, 3693780), (270, 3037108), (296, 2770335), (333, 2462520), (360, 2277831), (370, 2216268), (444, 1846890), (540, 1518554), (555, 1477512), (666, 1231260), (740, 1108134), (888, 923445), (999, 820840), (1080, 759277), (1110, 738756), (1332, 615630), (1480, 554067), (1665, 492504), (1998, 410420), (2220, 369378), (2664, 307815), (3330, 246252), (3996, 205210), (4440, 184689), (4995, 164168), (6660, 123126), (7992, 102605), (9990, 82084), (13320, 61563), (19980, 41042), (20521, 39960)]