21203784

素因数分解:

$2^3\times 3^2\times 7^1\times {\mathrm{42071}}^1$

素因数の和:42090

約数の個数: 48

約数和(自身を含む): 65632320

約数和(自身を除く): 44428536

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 18, 21, 24, 28, 36, 42, 56, 63, 72, 84, 126, 168, 252, 504, 42071, 84142, 126213, 168284, 252426, 294497, 336568, 378639, 504852, 588994, 757278, 883491, 1009704, 1177988, 1514556, 1766982, 2355976, 2650473, 3029112, 3533964, 5300946, 7067928, 10601892, 21203784]

約数ペア:

[(1, 21203784), (2, 10601892), (3, 7067928), (4, 5300946), (6, 3533964), (7, 3029112), (8, 2650473), (9, 2355976), (12, 1766982), (14, 1514556), (18, 1177988), (21, 1009704), (24, 883491), (28, 757278), (36, 588994), (42, 504852), (56, 378639), (63, 336568), (72, 294497), (84, 252426), (126, 168284), (168, 126213), (252, 84142), (504, 42071)]