21820383

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{59}}^1\times {\mathrm{109}}^1$

素因数の和:216

約数の個数: 48

約数和(自身を含む): 36036000

約数和(自身を除く): 14215617

約数列:

[1, 3, 9, 13, 29, 39, 59, 87, 109, 117, 177, 261, 327, 377, 531, 767, 981, 1131, 1417, 1711, 2301, 3161, 3393, 4251, 5133, 6431, 6903, 9483, 12753, 15399, 19293, 22243, 28449, 41093, 57879, 66729, 83603, 123279, 186499, 200187, 250809, 369837, 559497, 752427, 1678491, 2424487, 7273461, 21820383]

約数ペア:

[(1, 21820383), (3, 7273461), (9, 2424487), (13, 1678491), (29, 752427), (39, 559497), (59, 369837), (87, 250809), (109, 200187), (117, 186499), (177, 123279), (261, 83603), (327, 66729), (377, 57879), (531, 41093), (767, 28449), (981, 22243), (1131, 19293), (1417, 15399), (1711, 12753), (2301, 9483), (3161, 6903), (3393, 6431), (4251, 5133)]