21279301888

素因数分解:

$2^8\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{136043}}^1$

素因数の和:136119

約数の個数: 72

約数和(自身を含む): 46716421248

約数和(自身を除く): 25437119360

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 47, 52, 64, 94, 104, 128, 188, 208, 256, 376, 416, 611, 752, 832, 1222, 1504, 1664, 2444, 3008, 3328, 4888, 6016, 9776, 12032, 19552, 39104, 78208, 136043, 156416, 272086, 544172, 1088344, 1768559, 2176688, 3537118, 4353376, 6394021, 7074236, 8706752, 12788042, 14148472, 17413504, 25576084, 28296944, 34827008, 51152168, 56593888, 83122273, 102304336, 113187776, 166244546, 204608672, 226375552, 332489092, 409217344, 452751104, 664978184, 818434688, 1329956368, 1636869376, 2659912736, 5319825472, 10639650944, 21279301888]

約数ペア:

[(1, 21279301888), (2, 10639650944), (4, 5319825472), (8, 2659912736), (13, 1636869376), (16, 1329956368), (26, 818434688), (32, 664978184), (47, 452751104), (52, 409217344), (64, 332489092), (94, 226375552), (104, 204608672), (128, 166244546), (188, 113187776), (208, 102304336), (256, 83122273), (376, 56593888), (416, 51152168), (611, 34827008), (752, 28296944), (832, 25576084), (1222, 17413504), (1504, 14148472), (1664, 12788042), (2444, 8706752), (3008, 7074236), (3328, 6394021), (4888, 4353376), (6016, 3537118), (9776, 2176688), (12032, 1768559), (19552, 1088344), (39104, 544172), (78208, 272086), (136043, 156416)]