21048448

素因数分解:

$2^7\times {\mathrm{17}}^2\times {\mathrm{569}}^1$

素因数の和:617

約数の個数: 48

約数和(自身を含む): 44622450

約数和(自身を除く): 23574002

約数列:

[1, 2, 4, 8, 16, 17, 32, 34, 64, 68, 128, 136, 272, 289, 544, 569, 578, 1088, 1138, 1156, 2176, 2276, 2312, 4552, 4624, 9104, 9248, 9673, 18208, 18496, 19346, 36416, 36992, 38692, 72832, 77384, 154768, 164441, 309536, 328882, 619072, 657764, 1238144, 1315528, 2631056, 5262112, 10524224, 21048448]

約数ペア:

[(1, 21048448), (2, 10524224), (4, 5262112), (8, 2631056), (16, 1315528), (17, 1238144), (32, 657764), (34, 619072), (64, 328882), (68, 309536), (128, 164441), (136, 154768), (272, 77384), (289, 72832), (544, 38692), (569, 36992), (578, 36416), (1088, 19346), (1138, 18496), (1156, 18208), (2176, 9673), (2276, 9248), (2312, 9104), (4552, 4624)]