19948720

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{22669}}^1$

素因数の和:22693

約数の個数: 40

約数和(自身を含む): 50599440

約数和(自身を除く): 30650720

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 880, 22669, 45338, 90676, 113345, 181352, 226690, 249359, 362704, 453380, 498718, 906760, 997436, 1246795, 1813520, 1994872, 2493590, 3989744, 4987180, 9974360, 19948720]

約数ペア:

[(1, 19948720), (2, 9974360), (4, 4987180), (5, 3989744), (8, 2493590), (10, 1994872), (11, 1813520), (16, 1246795), (20, 997436), (22, 906760), (40, 498718), (44, 453380), (55, 362704), (80, 249359), (88, 226690), (110, 181352), (176, 113345), (220, 90676), (440, 45338), (880, 22669)]