21475088

素因数分解:

$2^4\times {\mathrm{83}}^1\times {\mathrm{103}}^1\times {\mathrm{157}}^1$

素因数の和:351

約数の個数: 40

約数和(自身を含む): 42788928

約数和(自身を除く): 21313840

約数列:

[1, 2, 4, 8, 16, 83, 103, 157, 166, 206, 314, 332, 412, 628, 664, 824, 1256, 1328, 1648, 2512, 8549, 13031, 16171, 17098, 26062, 32342, 34196, 52124, 64684, 68392, 104248, 129368, 136784, 208496, 258736, 1342193, 2684386, 5368772, 10737544, 21475088]

約数ペア:

[(1, 21475088), (2, 10737544), (4, 5368772), (8, 2684386), (16, 1342193), (83, 258736), (103, 208496), (157, 136784), (166, 129368), (206, 104248), (314, 68392), (332, 64684), (412, 52124), (628, 34196), (664, 32342), (824, 26062), (1256, 17098), (1328, 16171), (1648, 13031), (2512, 8549)]