21647664

素因数分解:

$2^4\times 3^2\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{239}}^1$

素因数の和:307

約数の個数: 120

約数和(自身を含む): 66156480

約数和(自身を除く): 44508816

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 17, 18, 24, 34, 36, 37, 48, 51, 68, 72, 74, 102, 111, 136, 144, 148, 153, 204, 222, 239, 272, 296, 306, 333, 408, 444, 478, 592, 612, 629, 666, 717, 816, 888, 956, 1224, 1258, 1332, 1434, 1776, 1887, 1912, 2151, 2448, 2516, 2664, 2868, 3774, 3824, 4063, 4302, 5032, 5328, 5661, 5736, 7548, 8126, 8604, 8843, 10064, 11322, 11472, 12189, 15096, 16252, 17208, 17686, 22644, 24378, 26529, 30192, 32504, 34416, 35372, 36567, 45288, 48756, 53058, 65008, 70744, 73134, 79587, 90576, 97512, 106116, 141488, 146268, 150331, 159174, 195024, 212232, 292536, 300662, 318348, 424464, 450993, 585072, 601324, 636696, 901986, 1202648, 1273392, 1352979, 1803972, 2405296, 2705958, 3607944, 5411916, 7215888, 10823832, 21647664]

約数ペア:

[(1, 21647664), (2, 10823832), (3, 7215888), (4, 5411916), (6, 3607944), (8, 2705958), (9, 2405296), (12, 1803972), (16, 1352979), (17, 1273392), (18, 1202648), (24, 901986), (34, 636696), (36, 601324), (37, 585072), (48, 450993), (51, 424464), (68, 318348), (72, 300662), (74, 292536), (102, 212232), (111, 195024), (136, 159174), (144, 150331), (148, 146268), (153, 141488), (204, 106116), (222, 97512), (239, 90576), (272, 79587), (296, 73134), (306, 70744), (333, 65008), (408, 53058), (444, 48756), (478, 45288), (592, 36567), (612, 35372), (629, 34416), (666, 32504), (717, 30192), (816, 26529), (888, 24378), (956, 22644), (1224, 17686), (1258, 17208), (1332, 16252), (1434, 15096), (1776, 12189), (1887, 11472), (1912, 11322), (2151, 10064), (2448, 8843), (2516, 8604), (2664, 8126), (2868, 7548), (3774, 5736), (3824, 5661), (4063, 5328), (4302, 5032)]