21075256

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{2273}}^1$

素因数の和:2359

約数の個数: 32

約数和(自身を含む): 42296400

約数和(自身を除く): 21221144

約数列:

[1, 2, 4, 8, 19, 38, 61, 76, 122, 152, 244, 488, 1159, 2273, 2318, 4546, 4636, 9092, 9272, 18184, 43187, 86374, 138653, 172748, 277306, 345496, 554612, 1109224, 2634407, 5268814, 10537628, 21075256]

約数ペア:

[(1, 21075256), (2, 10537628), (4, 5268814), (8, 2634407), (19, 1109224), (38, 554612), (61, 345496), (76, 277306), (122, 172748), (152, 138653), (244, 86374), (488, 43187), (1159, 18184), (2273, 9272), (2318, 9092), (4546, 4636)]