21780252

素因数分解:

$2^2\times 3^4\times {\mathrm{13}}^1\times {\mathrm{5171}}^1$

素因数の和:5200

約数の個数: 60

約数和(自身を含む): 61329576

約数和(自身を除く): 39549324

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 27, 36, 39, 52, 54, 78, 81, 108, 117, 156, 162, 234, 324, 351, 468, 702, 1053, 1404, 2106, 4212, 5171, 10342, 15513, 20684, 31026, 46539, 62052, 67223, 93078, 134446, 139617, 186156, 201669, 268892, 279234, 403338, 418851, 558468, 605007, 806676, 837702, 1210014, 1675404, 1815021, 2420028, 3630042, 5445063, 7260084, 10890126, 21780252]

約数ペア:

[(1, 21780252), (2, 10890126), (3, 7260084), (4, 5445063), (6, 3630042), (9, 2420028), (12, 1815021), (13, 1675404), (18, 1210014), (26, 837702), (27, 806676), (36, 605007), (39, 558468), (52, 418851), (54, 403338), (78, 279234), (81, 268892), (108, 201669), (117, 186156), (156, 139617), (162, 134446), (234, 93078), (324, 67223), (351, 62052), (468, 46539), (702, 31026), (1053, 20684), (1404, 15513), (2106, 10342), (4212, 5171)]