639744

素因数分解:

$2^8\times 3^1\times 7^2\times {\mathrm{17}}^1$

素因数の和:50

約数の個数: 108

約数和(自身を含む): 2097144

約数和(自身を除く): 1457400

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 16, 17, 21, 24, 28, 32, 34, 42, 48, 49, 51, 56, 64, 68, 84, 96, 98, 102, 112, 119, 128, 136, 147, 168, 192, 196, 204, 224, 238, 256, 272, 294, 336, 357, 384, 392, 408, 448, 476, 544, 588, 672, 714, 768, 784, 816, 833, 896, 952, 1088, 1176, 1344, 1428, 1568, 1632, 1666, 1792, 1904, 2176, 2352, 2499, 2688, 2856, 3136, 3264, 3332, 3808, 4352, 4704, 4998, 5376, 5712, 6272, 6528, 6664, 7616, 9408, 9996, 11424, 12544, 13056, 13328, 15232, 18816, 19992, 22848, 26656, 30464, 37632, 39984, 45696, 53312, 79968, 91392, 106624, 159936, 213248, 319872, 639744]

約数ペア:

[(1, 639744), (2, 319872), (3, 213248), (4, 159936), (6, 106624), (7, 91392), (8, 79968), (12, 53312), (14, 45696), (16, 39984), (17, 37632), (21, 30464), (24, 26656), (28, 22848), (32, 19992), (34, 18816), (42, 15232), (48, 13328), (49, 13056), (51, 12544), (56, 11424), (64, 9996), (68, 9408), (84, 7616), (96, 6664), (98, 6528), (102, 6272), (112, 5712), (119, 5376), (128, 4998), (136, 4704), (147, 4352), (168, 3808), (192, 3332), (196, 3264), (204, 3136), (224, 2856), (238, 2688), (256, 2499), (272, 2352), (294, 2176), (336, 1904), (357, 1792), (384, 1666), (392, 1632), (408, 1568), (448, 1428), (476, 1344), (544, 1176), (588, 1088), (672, 952), (714, 896), (768, 833), (784, 816)]