21052836

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{4397}}^1$

素因数の和:4433

約数の個数: 72

約数和(自身を含む): 64034880

約数和(自身を除く): 42982044

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 19, 21, 28, 36, 38, 42, 57, 63, 76, 84, 114, 126, 133, 171, 228, 252, 266, 342, 399, 532, 684, 798, 1197, 1596, 2394, 4397, 4788, 8794, 13191, 17588, 26382, 30779, 39573, 52764, 61558, 79146, 83543, 92337, 123116, 158292, 167086, 184674, 250629, 277011, 334172, 369348, 501258, 554022, 584801, 751887, 1002516, 1108044, 1169602, 1503774, 1754403, 2339204, 3007548, 3508806, 5263209, 7017612, 10526418, 21052836]

約数ペア:

[(1, 21052836), (2, 10526418), (3, 7017612), (4, 5263209), (6, 3508806), (7, 3007548), (9, 2339204), (12, 1754403), (14, 1503774), (18, 1169602), (19, 1108044), (21, 1002516), (28, 751887), (36, 584801), (38, 554022), (42, 501258), (57, 369348), (63, 334172), (76, 277011), (84, 250629), (114, 184674), (126, 167086), (133, 158292), (171, 123116), (228, 92337), (252, 83543), (266, 79146), (342, 61558), (399, 52764), (532, 39573), (684, 30779), (798, 26382), (1197, 17588), (1596, 13191), (2394, 8794), (4397, 4788)]