21597840

素因数分解:

$2^4\times 3^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{101}}^1$

素因数の和:140

約数の個数: 240

約数和(自身を含む): 82869696

約数和(自身を除く): 61271856

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 15, 16, 18, 20, 22, 24, 27, 30, 33, 36, 40, 44, 45, 48, 54, 55, 60, 66, 72, 80, 81, 88, 90, 99, 101, 108, 110, 120, 132, 135, 144, 162, 165, 176, 180, 198, 202, 216, 220, 240, 243, 264, 270, 297, 303, 324, 330, 360, 396, 404, 405, 432, 440, 486, 495, 505, 528, 540, 594, 606, 648, 660, 720, 792, 808, 810, 880, 891, 909, 972, 990, 1010, 1080, 1111, 1188, 1212, 1215, 1296, 1320, 1485, 1515, 1584, 1616, 1620, 1782, 1818, 1944, 1980, 2020, 2160, 2222, 2376, 2424, 2430, 2640, 2673, 2727, 2970, 3030, 3240, 3333, 3564, 3636, 3888, 3960, 4040, 4444, 4455, 4545, 4752, 4848, 4860, 5346, 5454, 5555, 5940, 6060, 6480, 6666, 7128, 7272, 7920, 8080, 8181, 8888, 8910, 9090, 9720, 9999, 10692, 10908, 11110, 11880, 12120, 13332, 13365, 13635, 14256, 14544, 16362, 16665, 17776, 17820, 18180, 19440, 19998, 21384, 21816, 22220, 23760, 24240, 24543, 26664, 26730, 27270, 29997, 32724, 33330, 35640, 36360, 39996, 40905, 42768, 43632, 44440, 49086, 49995, 53328, 53460, 54540, 59994, 65448, 66660, 71280, 72720, 79992, 81810, 88880, 89991, 98172, 99990, 106920, 109080, 119988, 122715, 130896, 133320, 149985, 159984, 163620, 179982, 196344, 199980, 213840, 218160, 239976, 245430, 266640, 269973, 299970, 327240, 359964, 392688, 399960, 449955, 479952, 490860, 539946, 599940, 654480, 719928, 799920, 899910, 981720, 1079892, 1199880, 1349865, 1439856, 1799820, 1963440, 2159784, 2399760, 2699730, 3599640, 4319568, 5399460, 7199280, 10798920, 21597840]

約数ペア:

[(1, 21597840), (2, 10798920), (3, 7199280), (4, 5399460), (5, 4319568), (6, 3599640), (8, 2699730), (9, 2399760), (10, 2159784), (11, 1963440), (12, 1799820), (15, 1439856), (16, 1349865), (18, 1199880), (20, 1079892), (22, 981720), (24, 899910), (27, 799920), (30, 719928), (33, 654480), (36, 599940), (40, 539946), (44, 490860), (45, 479952), (48, 449955), (54, 399960), (55, 392688), (60, 359964), (66, 327240), (72, 299970), (80, 269973), (81, 266640), (88, 245430), (90, 239976), (99, 218160), (101, 213840), (108, 199980), (110, 196344), (120, 179982), (132, 163620), (135, 159984), (144, 149985), (162, 133320), (165, 130896), (176, 122715), (180, 119988), (198, 109080), (202, 106920), (216, 99990), (220, 98172), (240, 89991), (243, 88880), (264, 81810), (270, 79992), (297, 72720), (303, 71280), (324, 66660), (330, 65448), (360, 59994), (396, 54540), (404, 53460), (405, 53328), (432, 49995), (440, 49086), (486, 44440), (495, 43632), (505, 42768), (528, 40905), (540, 39996), (594, 36360), (606, 35640), (648, 33330), (660, 32724), (720, 29997), (792, 27270), (808, 26730), (810, 26664), (880, 24543), (891, 24240), (909, 23760), (972, 22220), (990, 21816), (1010, 21384), (1080, 19998), (1111, 19440), (1188, 18180), (1212, 17820), (1215, 17776), (1296, 16665), (1320, 16362), (1485, 14544), (1515, 14256), (1584, 13635), (1616, 13365), (1620, 13332), (1782, 12120), (1818, 11880), (1944, 11110), (1980, 10908), (2020, 10692), (2160, 9999), (2222, 9720), (2376, 9090), (2424, 8910), (2430, 8888), (2640, 8181), (2673, 8080), (2727, 7920), (2970, 7272), (3030, 7128), (3240, 6666), (3333, 6480), (3564, 6060), (3636, 5940), (3888, 5555), (3960, 5454), (4040, 5346), (4444, 4860), (4455, 4848), (4545, 4752)]