21587097

素因数分解:

$3^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{131}}^1$

素因数の和:226

約数の個数: 48

約数和(自身を含む): 36115200

約数和(自身を除く): 14528103

約数列:

[1, 3, 7, 19, 21, 49, 57, 59, 131, 133, 147, 177, 393, 399, 413, 917, 931, 1121, 1239, 2489, 2751, 2793, 2891, 3363, 6419, 7467, 7729, 7847, 8673, 17423, 19257, 23187, 23541, 52269, 54103, 54929, 121961, 146851, 162309, 164787, 365883, 378721, 440553, 1027957, 1136163, 3083871, 7195699, 21587097]

約数ペア:

[(1, 21587097), (3, 7195699), (7, 3083871), (19, 1136163), (21, 1027957), (49, 440553), (57, 378721), (59, 365883), (131, 164787), (133, 162309), (147, 146851), (177, 121961), (393, 54929), (399, 54103), (413, 52269), (917, 23541), (931, 23187), (1121, 19257), (1239, 17423), (2489, 8673), (2751, 7847), (2793, 7729), (2891, 7467), (3363, 6419)]