21206453907

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{109}}^1\times {\mathrm{38351}}^1$

素因数の和:38571

約数の個数: 32

約数和(自身を含む): 30374784000

約数和(自身を除く): 9168330093

約数列:

[1, 3, 19, 57, 89, 109, 267, 327, 1691, 2071, 5073, 6213, 9701, 29103, 38351, 115053, 184319, 552957, 728669, 2186007, 3413239, 4180259, 10239717, 12540777, 64851541, 79424921, 194554623, 238274763, 372043051, 1116129153, 7068817969, 21206453907]

約数ペア:

[(1, 21206453907), (3, 7068817969), (19, 1116129153), (57, 372043051), (89, 238274763), (109, 194554623), (267, 79424921), (327, 64851541), (1691, 12540777), (2071, 10239717), (5073, 4180259), (6213, 3413239), (9701, 2186007), (29103, 728669), (38351, 552957), (115053, 184319)]