21094480

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23971}}^1$

素因数の和:23995

約数の個数: 40

約数和(自身を含む): 53505504

約数和(自身を除く): 32411024

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 880, 23971, 47942, 95884, 119855, 191768, 239710, 263681, 383536, 479420, 527362, 958840, 1054724, 1318405, 1917680, 2109448, 2636810, 4218896, 5273620, 10547240, 21094480]

約数ペア:

[(1, 21094480), (2, 10547240), (4, 5273620), (5, 4218896), (8, 2636810), (10, 2109448), (11, 1917680), (16, 1318405), (20, 1054724), (22, 958840), (40, 527362), (44, 479420), (55, 383536), (80, 263681), (88, 239710), (110, 191768), (176, 119855), (220, 95884), (440, 47942), (880, 23971)]