21006825

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{40013}}^1$

素因数の和:40033

約数の個数: 24

約数和(自身を含む): 39693888

約数和(自身を除く): 18687063

約数列:

[1, 3, 5, 7, 15, 21, 25, 35, 75, 105, 175, 525, 40013, 120039, 200065, 280091, 600195, 840273, 1000325, 1400455, 3000975, 4201365, 7002275, 21006825]

約数ペア:

[(1, 21006825), (3, 7002275), (5, 4201365), (7, 3000975), (15, 1400455), (21, 1000325), (25, 840273), (35, 600195), (75, 280091), (105, 200065), (175, 120039), (525, 40013)]