21491876

素因数分解:

$2^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{163}}^1\times {\mathrm{277}}^1$

素因数の和:468

約数の個数: 48

約数和(自身を含む): 45956736

約数和(自身を除く): 24464860

約数列:

[1, 2, 4, 7, 14, 17, 28, 34, 68, 119, 163, 238, 277, 326, 476, 554, 652, 1108, 1141, 1939, 2282, 2771, 3878, 4564, 4709, 5542, 7756, 9418, 11084, 18836, 19397, 32963, 38794, 45151, 65926, 77588, 90302, 131852, 180604, 316057, 632114, 767567, 1264228, 1535134, 3070268, 5372969, 10745938, 21491876]

約数ペア:

[(1, 21491876), (2, 10745938), (4, 5372969), (7, 3070268), (14, 1535134), (17, 1264228), (28, 767567), (34, 632114), (68, 316057), (119, 180604), (163, 131852), (238, 90302), (277, 77588), (326, 65926), (476, 45151), (554, 38794), (652, 32963), (1108, 19397), (1141, 18836), (1939, 11084), (2282, 9418), (2771, 7756), (3878, 5542), (4564, 4709)]