21555410

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{239}}^1\times {\mathrm{311}}^1$

素因数の和:586

約数の個数: 32

約数和(自身を含む): 40435200

約数和(自身を除く): 18879790

約数列:

[1, 2, 5, 10, 29, 58, 145, 239, 290, 311, 478, 622, 1195, 1555, 2390, 3110, 6931, 9019, 13862, 18038, 34655, 45095, 69310, 74329, 90190, 148658, 371645, 743290, 2155541, 4311082, 10777705, 21555410]

約数ペア:

[(1, 21555410), (2, 10777705), (5, 4311082), (10, 2155541), (29, 743290), (58, 371645), (145, 148658), (239, 90190), (290, 74329), (311, 69310), (478, 45095), (622, 34655), (1195, 18038), (1555, 13862), (2390, 9019), (3110, 6931)]