21654720

素因数分解:

$2^6\times 3^2\times 5^1\times {\mathrm{73}}^1\times {\mathrm{103}}^1$

素因数の和:199

約数の個数: 168

約数和(自身を含む): 76236576

約数和(自身を除く): 54581856

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 45, 48, 60, 64, 72, 73, 80, 90, 96, 103, 120, 144, 146, 160, 180, 192, 206, 219, 240, 288, 292, 309, 320, 360, 365, 412, 438, 480, 515, 576, 584, 618, 657, 720, 730, 824, 876, 927, 960, 1030, 1095, 1168, 1236, 1314, 1440, 1460, 1545, 1648, 1752, 1854, 2060, 2190, 2336, 2472, 2628, 2880, 2920, 3090, 3285, 3296, 3504, 3708, 4120, 4380, 4635, 4672, 4944, 5256, 5840, 6180, 6570, 6592, 7008, 7416, 7519, 8240, 8760, 9270, 9888, 10512, 11680, 12360, 13140, 14016, 14832, 15038, 16480, 17520, 18540, 19776, 21024, 22557, 23360, 24720, 26280, 29664, 30076, 32960, 35040, 37080, 37595, 42048, 45114, 49440, 52560, 59328, 60152, 67671, 70080, 74160, 75190, 90228, 98880, 105120, 112785, 120304, 135342, 148320, 150380, 180456, 210240, 225570, 240608, 270684, 296640, 300760, 338355, 360912, 451140, 481216, 541368, 601520, 676710, 721824, 902280, 1082736, 1203040, 1353420, 1443648, 1804560, 2165472, 2406080, 2706840, 3609120, 4330944, 5413680, 7218240, 10827360, 21654720]

約数ペア:

[(1, 21654720), (2, 10827360), (3, 7218240), (4, 5413680), (5, 4330944), (6, 3609120), (8, 2706840), (9, 2406080), (10, 2165472), (12, 1804560), (15, 1443648), (16, 1353420), (18, 1203040), (20, 1082736), (24, 902280), (30, 721824), (32, 676710), (36, 601520), (40, 541368), (45, 481216), (48, 451140), (60, 360912), (64, 338355), (72, 300760), (73, 296640), (80, 270684), (90, 240608), (96, 225570), (103, 210240), (120, 180456), (144, 150380), (146, 148320), (160, 135342), (180, 120304), (192, 112785), (206, 105120), (219, 98880), (240, 90228), (288, 75190), (292, 74160), (309, 70080), (320, 67671), (360, 60152), (365, 59328), (412, 52560), (438, 49440), (480, 45114), (515, 42048), (576, 37595), (584, 37080), (618, 35040), (657, 32960), (720, 30076), (730, 29664), (824, 26280), (876, 24720), (927, 23360), (960, 22557), (1030, 21024), (1095, 19776), (1168, 18540), (1236, 17520), (1314, 16480), (1440, 15038), (1460, 14832), (1545, 14016), (1648, 13140), (1752, 12360), (1854, 11680), (2060, 10512), (2190, 9888), (2336, 9270), (2472, 8760), (2628, 8240), (2880, 7519), (2920, 7416), (3090, 7008), (3285, 6592), (3296, 6570), (3504, 6180), (3708, 5840), (4120, 5256), (4380, 4944), (4635, 4672)]