20819968

素因数分解:

$2^{12}\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1$

素因数の和:77

約数の個数: 104

約数和(自身を含む): 49539168

約数和(自身を除く): 28719200

約数列:

[1, 2, 4, 8, 13, 16, 17, 23, 26, 32, 34, 46, 52, 64, 68, 92, 104, 128, 136, 184, 208, 221, 256, 272, 299, 368, 391, 416, 442, 512, 544, 598, 736, 782, 832, 884, 1024, 1088, 1196, 1472, 1564, 1664, 1768, 2048, 2176, 2392, 2944, 3128, 3328, 3536, 4096, 4352, 4784, 5083, 5888, 6256, 6656, 7072, 8704, 9568, 10166, 11776, 12512, 13312, 14144, 17408, 19136, 20332, 23552, 25024, 26624, 28288, 34816, 38272, 40664, 47104, 50048, 53248, 56576, 69632, 76544, 81328, 94208, 100096, 113152, 153088, 162656, 200192, 226304, 306176, 325312, 400384, 452608, 612352, 650624, 800768, 905216, 1224704, 1301248, 1601536, 2602496, 5204992, 10409984, 20819968]

約数ペア:

[(1, 20819968), (2, 10409984), (4, 5204992), (8, 2602496), (13, 1601536), (16, 1301248), (17, 1224704), (23, 905216), (26, 800768), (32, 650624), (34, 612352), (46, 452608), (52, 400384), (64, 325312), (68, 306176), (92, 226304), (104, 200192), (128, 162656), (136, 153088), (184, 113152), (208, 100096), (221, 94208), (256, 81328), (272, 76544), (299, 69632), (368, 56576), (391, 53248), (416, 50048), (442, 47104), (512, 40664), (544, 38272), (598, 34816), (736, 28288), (782, 26624), (832, 25024), (884, 23552), (1024, 20332), (1088, 19136), (1196, 17408), (1472, 14144), (1564, 13312), (1664, 12512), (1768, 11776), (2048, 10166), (2176, 9568), (2392, 8704), (2944, 7072), (3128, 6656), (3328, 6256), (3536, 5888), (4096, 5083), (4352, 4784)]