21440436

素因数分解:

$2^2\times 3^1\times {\mathrm{19}}^1\times {\mathrm{271}}^1\times {\mathrm{347}}^1$

素因数の和:644

約数の個数: 48

約数和(自身を含む): 53007360

約数和(自身を除く): 31566924

約数列:

[1, 2, 3, 4, 6, 12, 19, 38, 57, 76, 114, 228, 271, 347, 542, 694, 813, 1041, 1084, 1388, 1626, 2082, 3252, 4164, 5149, 6593, 10298, 13186, 15447, 19779, 20596, 26372, 30894, 39558, 61788, 79116, 94037, 188074, 282111, 376148, 564222, 1128444, 1786703, 3573406, 5360109, 7146812, 10720218, 21440436]

約数ペア:

[(1, 21440436), (2, 10720218), (3, 7146812), (4, 5360109), (6, 3573406), (12, 1786703), (19, 1128444), (38, 564222), (57, 376148), (76, 282111), (114, 188074), (228, 94037), (271, 79116), (347, 61788), (542, 39558), (694, 30894), (813, 26372), (1041, 20596), (1084, 19779), (1388, 15447), (1626, 13186), (2082, 10298), (3252, 6593), (4164, 5149)]