21143775

素因数分解:

$3^1\times 5^2\times {\mathrm{151}}^1\times {\mathrm{1867}}^1$

素因数の和:2031

約数の個数: 24

約数和(自身を含む): 35208064

約数和(自身を除く): 14064289

約数列:

[1, 3, 5, 15, 25, 75, 151, 453, 755, 1867, 2265, 3775, 5601, 9335, 11325, 28005, 46675, 140025, 281917, 845751, 1409585, 4228755, 7047925, 21143775]

約数ペア:

[(1, 21143775), (3, 7047925), (5, 4228755), (15, 1409585), (25, 845751), (75, 281917), (151, 140025), (453, 46675), (755, 28005), (1867, 11325), (2265, 9335), (3775, 5601)]