21402052

素因数分解:

$2^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{167}}^1\times {\mathrm{199}}^1$

素因数の和:400

約数の個数: 48

約数和(自身を含む): 45158400

約数和(自身を除く): 23756348

約数列:

[1, 2, 4, 7, 14, 23, 28, 46, 92, 161, 167, 199, 322, 334, 398, 644, 668, 796, 1169, 1393, 2338, 2786, 3841, 4577, 4676, 5572, 7682, 9154, 15364, 18308, 26887, 32039, 33233, 53774, 64078, 66466, 107548, 128156, 132932, 232631, 465262, 764359, 930524, 1528718, 3057436, 5350513, 10701026, 21402052]

約数ペア:

[(1, 21402052), (2, 10701026), (4, 5350513), (7, 3057436), (14, 1528718), (23, 930524), (28, 764359), (46, 465262), (92, 232631), (161, 132932), (167, 128156), (199, 107548), (322, 66466), (334, 64078), (398, 53774), (644, 33233), (668, 32039), (796, 26887), (1169, 18308), (1393, 15364), (2338, 9154), (2786, 7682), (3841, 5572), (4577, 4676)]