21000798

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{12821}}^1$

素因数の和:12849

約数の個数: 48

約数和(自身を含む): 56006496

約数和(自身を除く): 35005698

約数列:

[1, 2, 3, 6, 7, 9, 13, 14, 18, 21, 26, 39, 42, 63, 78, 91, 117, 126, 182, 234, 273, 546, 819, 1638, 12821, 25642, 38463, 76926, 89747, 115389, 166673, 179494, 230778, 269241, 333346, 500019, 538482, 807723, 1000038, 1166711, 1500057, 1615446, 2333422, 3000114, 3500133, 7000266, 10500399, 21000798]

約数ペア:

[(1, 21000798), (2, 10500399), (3, 7000266), (6, 3500133), (7, 3000114), (9, 2333422), (13, 1615446), (14, 1500057), (18, 1166711), (21, 1000038), (26, 807723), (39, 538482), (42, 500019), (63, 333346), (78, 269241), (91, 230778), (117, 179494), (126, 166673), (182, 115389), (234, 89747), (273, 76926), (546, 38463), (819, 25642), (1638, 12821)]