20207440

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{22963}}^1$

素因数の和:22987

約数の個数: 40

約数和(自身を含む): 51255648

約数和(自身を除く): 31048208

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 880, 22963, 45926, 91852, 114815, 183704, 229630, 252593, 367408, 459260, 505186, 918520, 1010372, 1262965, 1837040, 2020744, 2525930, 4041488, 5051860, 10103720, 20207440]

約数ペア:

[(1, 20207440), (2, 10103720), (4, 5051860), (5, 4041488), (8, 2525930), (10, 2020744), (11, 1837040), (16, 1262965), (20, 1010372), (22, 918520), (40, 505186), (44, 459260), (55, 367408), (80, 252593), (88, 229630), (110, 183704), (176, 114815), (220, 91852), (440, 45926), (880, 22963)]