21519756

素因数分解:

$2^2\times 3^4\times {\mathrm{17}}^1\times {\mathrm{3907}}^1$

素因数の和:3940

約数の個数: 60

約数和(自身を含む): 59581368

約数和(自身を除く): 38061612

約数列:

[1, 2, 3, 4, 6, 9, 12, 17, 18, 27, 34, 36, 51, 54, 68, 81, 102, 108, 153, 162, 204, 306, 324, 459, 612, 918, 1377, 1836, 2754, 3907, 5508, 7814, 11721, 15628, 23442, 35163, 46884, 66419, 70326, 105489, 132838, 140652, 199257, 210978, 265676, 316467, 398514, 421956, 597771, 632934, 797028, 1195542, 1265868, 1793313, 2391084, 3586626, 5379939, 7173252, 10759878, 21519756]

約数ペア:

[(1, 21519756), (2, 10759878), (3, 7173252), (4, 5379939), (6, 3586626), (9, 2391084), (12, 1793313), (17, 1265868), (18, 1195542), (27, 797028), (34, 632934), (36, 597771), (51, 421956), (54, 398514), (68, 316467), (81, 265676), (102, 210978), (108, 199257), (153, 140652), (162, 132838), (204, 105489), (306, 70326), (324, 66419), (459, 46884), (612, 35163), (918, 23442), (1377, 15628), (1836, 11721), (2754, 7814), (3907, 5508)]