21231231

素因数分解:

$3^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{113}}^1\times {\mathrm{389}}^1$

素因数の和:535

約数の個数: 32

約数和(自身を含む): 34145280

約数和(自身を除く): 12914049

約数列:

[1, 3, 7, 21, 23, 69, 113, 161, 339, 389, 483, 791, 1167, 2373, 2599, 2723, 7797, 8169, 8947, 18193, 26841, 43957, 54579, 62629, 131871, 187887, 307699, 923097, 1011011, 3033033, 7077077, 21231231]

約数ペア:

[(1, 21231231), (3, 7077077), (7, 3033033), (21, 1011011), (23, 923097), (69, 307699), (113, 187887), (161, 131871), (339, 62629), (389, 54579), (483, 43957), (791, 26841), (1167, 18193), (2373, 8947), (2599, 8169), (2723, 7797)]