21517125

素因数分解:

$3^1\times 5^3\times 7^2\times {\mathrm{1171}}^1$

素因数の和:1203

約数の個数: 48

約数和(自身を含む): 41685696

約数和(自身を除く): 20168571

約数列:

[1, 3, 5, 7, 15, 21, 25, 35, 49, 75, 105, 125, 147, 175, 245, 375, 525, 735, 875, 1171, 1225, 2625, 3513, 3675, 5855, 6125, 8197, 17565, 18375, 24591, 29275, 40985, 57379, 87825, 122955, 146375, 172137, 204925, 286895, 439125, 614775, 860685, 1024625, 1434475, 3073875, 4303425, 7172375, 21517125]

約数ペア:

[(1, 21517125), (3, 7172375), (5, 4303425), (7, 3073875), (15, 1434475), (21, 1024625), (25, 860685), (35, 614775), (49, 439125), (75, 286895), (105, 204925), (125, 172137), (147, 146375), (175, 122955), (245, 87825), (375, 57379), (525, 40985), (735, 29275), (875, 24591), (1171, 18375), (1225, 17565), (2625, 8197), (3513, 6125), (3675, 5855)]