21009975

素因数分解:

$3^1\times 5^2\times 7^2\times {\mathrm{5717}}^1$

素因数の和:5744

約数の個数: 36

約数和(自身を含む): 40414824

約数和(自身を除く): 19404849

約数列:

[1, 3, 5, 7, 15, 21, 25, 35, 49, 75, 105, 147, 175, 245, 525, 735, 1225, 3675, 5717, 17151, 28585, 40019, 85755, 120057, 142925, 200095, 280133, 428775, 600285, 840399, 1000475, 1400665, 3001425, 4201995, 7003325, 21009975]

約数ペア:

[(1, 21009975), (3, 7003325), (5, 4201995), (7, 3001425), (15, 1400665), (21, 1000475), (25, 840399), (35, 600285), (49, 428775), (75, 280133), (105, 200095), (147, 142925), (175, 120057), (245, 85755), (525, 40019), (735, 28585), (1225, 17151), (3675, 5717)]