21706755

素因数分解:

$3^1\times 5^1\times 7^3\times {\mathrm{4219}}^1$

素因数の和:4248

約数の個数: 32

約数和(自身を含む): 40512000

約数和(自身を除く): 18805245

約数列:

[1, 3, 5, 7, 15, 21, 35, 49, 105, 147, 245, 343, 735, 1029, 1715, 4219, 5145, 12657, 21095, 29533, 63285, 88599, 147665, 206731, 442995, 620193, 1033655, 1447117, 3100965, 4341351, 7235585, 21706755]

約数ペア:

[(1, 21706755), (3, 7235585), (5, 4341351), (7, 3100965), (15, 1447117), (21, 1033655), (35, 620193), (49, 442995), (105, 206731), (147, 147665), (245, 88599), (343, 63285), (735, 29533), (1029, 21095), (1715, 12657), (4219, 5145)]