20828720

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23669}}^1$

素因数の和:23693

約数の個数: 40

約数和(自身を含む): 52831440

約数和(自身を除く): 32002720

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 880, 23669, 47338, 94676, 118345, 189352, 236690, 260359, 378704, 473380, 520718, 946760, 1041436, 1301795, 1893520, 2082872, 2603590, 4165744, 5207180, 10414360, 20828720]

約数ペア:

[(1, 20828720), (2, 10414360), (4, 5207180), (5, 4165744), (8, 2603590), (10, 2082872), (11, 1893520), (16, 1301795), (20, 1041436), (22, 946760), (40, 520718), (44, 473380), (55, 378704), (80, 260359), (88, 236690), (110, 189352), (176, 118345), (220, 94676), (440, 47338), (880, 23669)]