21043460

素因数分解:

$2^2\times 5^1\times {\mathrm{557}}^1\times {\mathrm{1889}}^1$

素因数の和:2455

約数の個数: 24

約数和(自身を含む): 44294040

約数和(自身を除く): 23250580

約数列:

[1, 2, 4, 5, 10, 20, 557, 1114, 1889, 2228, 2785, 3778, 5570, 7556, 9445, 11140, 18890, 37780, 1052173, 2104346, 4208692, 5260865, 10521730, 21043460]

約数ペア:

[(1, 21043460), (2, 10521730), (4, 5260865), (5, 4208692), (10, 2104346), (20, 1052173), (557, 37780), (1114, 18890), (1889, 11140), (2228, 9445), (2785, 7556), (3778, 5570)]