20829795

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{197}}^1$

素因数の和:284

約数の個数: 64

約数和(自身を含む): 41057280

約数和(自身を除く): 20227485

約数列:

[1, 3, 5, 7, 15, 19, 21, 35, 53, 57, 95, 105, 133, 159, 197, 265, 285, 371, 399, 591, 665, 795, 985, 1007, 1113, 1379, 1855, 1995, 2955, 3021, 3743, 4137, 5035, 5565, 6895, 7049, 10441, 11229, 15105, 18715, 20685, 21147, 26201, 31323, 35245, 52205, 56145, 73087, 78603, 105735, 131005, 156615, 198379, 219261, 365435, 393015, 595137, 991895, 1096305, 1388653, 2975685, 4165959, 6943265, 20829795]

約数ペア:

[(1, 20829795), (3, 6943265), (5, 4165959), (7, 2975685), (15, 1388653), (19, 1096305), (21, 991895), (35, 595137), (53, 393015), (57, 365435), (95, 219261), (105, 198379), (133, 156615), (159, 131005), (197, 105735), (265, 78603), (285, 73087), (371, 56145), (399, 52205), (591, 35245), (665, 31323), (795, 26201), (985, 21147), (1007, 20685), (1113, 18715), (1379, 15105), (1855, 11229), (1995, 10441), (2955, 7049), (3021, 6895), (3743, 5565), (4137, 5035)]