21306201

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{797}}^1$

素因数の和:893

約数の個数: 32

約数和(自身を含む): 34728960

約数和(自身を除く): 13422759

約数列:

[1, 3, 7, 19, 21, 57, 67, 133, 201, 399, 469, 797, 1273, 1407, 2391, 3819, 5579, 8911, 15143, 16737, 26733, 45429, 53399, 106001, 160197, 318003, 373793, 1014581, 1121379, 3043743, 7102067, 21306201]

約数ペア:

[(1, 21306201), (3, 7102067), (7, 3043743), (19, 1121379), (21, 1014581), (57, 373793), (67, 318003), (133, 160197), (201, 106001), (399, 53399), (469, 45429), (797, 26733), (1273, 16737), (1407, 15143), (2391, 8911), (3819, 5579)]