21091968

素因数分解:

$2^7\times 3^3\times {\mathrm{17}}^1\times {\mathrm{359}}^1$

素因数の和:399

約数の個数: 128

約数和(自身を含む): 66096000

約数和(自身を除く): 45004032

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 17, 18, 24, 27, 32, 34, 36, 48, 51, 54, 64, 68, 72, 96, 102, 108, 128, 136, 144, 153, 192, 204, 216, 272, 288, 306, 359, 384, 408, 432, 459, 544, 576, 612, 718, 816, 864, 918, 1077, 1088, 1152, 1224, 1436, 1632, 1728, 1836, 2154, 2176, 2448, 2872, 3231, 3264, 3456, 3672, 4308, 4896, 5744, 6103, 6462, 6528, 7344, 8616, 9693, 9792, 11488, 12206, 12924, 14688, 17232, 18309, 19386, 19584, 22976, 24412, 25848, 29376, 34464, 36618, 38772, 45952, 48824, 51696, 54927, 58752, 68928, 73236, 77544, 97648, 103392, 109854, 137856, 146472, 155088, 164781, 195296, 206784, 219708, 292944, 310176, 329562, 390592, 413568, 439416, 585888, 620352, 659124, 781184, 878832, 1171776, 1240704, 1318248, 1757664, 2343552, 2636496, 3515328, 5272992, 7030656, 10545984, 21091968]

約数ペア:

[(1, 21091968), (2, 10545984), (3, 7030656), (4, 5272992), (6, 3515328), (8, 2636496), (9, 2343552), (12, 1757664), (16, 1318248), (17, 1240704), (18, 1171776), (24, 878832), (27, 781184), (32, 659124), (34, 620352), (36, 585888), (48, 439416), (51, 413568), (54, 390592), (64, 329562), (68, 310176), (72, 292944), (96, 219708), (102, 206784), (108, 195296), (128, 164781), (136, 155088), (144, 146472), (153, 137856), (192, 109854), (204, 103392), (216, 97648), (272, 77544), (288, 73236), (306, 68928), (359, 58752), (384, 54927), (408, 51696), (432, 48824), (459, 45952), (544, 38772), (576, 36618), (612, 34464), (718, 29376), (816, 25848), (864, 24412), (918, 22976), (1077, 19584), (1088, 19386), (1152, 18309), (1224, 17232), (1436, 14688), (1632, 12924), (1728, 12206), (1836, 11488), (2154, 9792), (2176, 9693), (2448, 8616), (2872, 7344), (3231, 6528), (3264, 6462), (3456, 6103), (3672, 5744), (4308, 4896)]