21339320

素因数分解:

$2^3\times 5^1\times {\mathrm{151}}^1\times {\mathrm{3533}}^1$

素因数の和:3695

約数の個数: 32

約数和(自身を含む): 48345120

約数和(自身を除く): 27005800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 151, 302, 604, 755, 1208, 1510, 3020, 3533, 6040, 7066, 14132, 17665, 28264, 35330, 70660, 141320, 533483, 1066966, 2133932, 2667415, 4267864, 5334830, 10669660, 21339320]

約数ペア:

[(1, 21339320), (2, 10669660), (4, 5334830), (5, 4267864), (8, 2667415), (10, 2133932), (20, 1066966), (40, 533483), (151, 141320), (302, 70660), (604, 35330), (755, 28264), (1208, 17665), (1510, 14132), (3020, 7066), (3533, 6040)]