21199115

素因数分解:

$5^1\times 7^3\times {\mathrm{47}}^1\times {\mathrm{263}}^1$

素因数の和:336

約数の個数: 32

約数和(自身を含む): 30412800

約数和(自身を除く): 9213685

約数列:

[1, 5, 7, 35, 47, 49, 235, 245, 263, 329, 343, 1315, 1645, 1715, 1841, 2303, 9205, 11515, 12361, 12887, 16121, 61805, 64435, 80605, 86527, 90209, 432635, 451045, 605689, 3028445, 4239823, 21199115]

約数ペア:

[(1, 21199115), (5, 4239823), (7, 3028445), (35, 605689), (47, 451045), (49, 432635), (235, 90209), (245, 86527), (263, 80605), (329, 64435), (343, 61805), (1315, 16121), (1645, 12887), (1715, 12361), (1841, 11515), (2303, 9205)]