21809360

素因数分解:

$2^4\times 5^1\times {\mathrm{179}}^1\times {\mathrm{1523}}^1$

素因数の和:1715

約数の個数: 40

約数和(自身を含む): 51023520

約数和(自身を除く): 29214160

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 179, 358, 716, 895, 1432, 1523, 1790, 2864, 3046, 3580, 6092, 7160, 7615, 12184, 14320, 15230, 24368, 30460, 60920, 121840, 272617, 545234, 1090468, 1363085, 2180936, 2726170, 4361872, 5452340, 10904680, 21809360]

約数ペア:

[(1, 21809360), (2, 10904680), (4, 5452340), (5, 4361872), (8, 2726170), (10, 2180936), (16, 1363085), (20, 1090468), (40, 545234), (80, 272617), (179, 121840), (358, 60920), (716, 30460), (895, 24368), (1432, 15230), (1523, 14320), (1790, 12184), (2864, 7615), (3046, 7160), (3580, 6092)]