21458528

素因数分解:

$2^5\times 7^1\times {\mathrm{13}}^1\times {\mathrm{7369}}^1$

素因数の和:7399

約数の個数: 48

約数和(自身を含む): 52002720

約数和(自身を除く): 30544192

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 32, 52, 56, 91, 104, 112, 182, 208, 224, 364, 416, 728, 1456, 2912, 7369, 14738, 29476, 51583, 58952, 95797, 103166, 117904, 191594, 206332, 235808, 383188, 412664, 670579, 766376, 825328, 1341158, 1532752, 1650656, 2682316, 3065504, 5364632, 10729264, 21458528]

約数ペア:

[(1, 21458528), (2, 10729264), (4, 5364632), (7, 3065504), (8, 2682316), (13, 1650656), (14, 1532752), (16, 1341158), (26, 825328), (28, 766376), (32, 670579), (52, 412664), (56, 383188), (91, 235808), (104, 206332), (112, 191594), (182, 117904), (208, 103166), (224, 95797), (364, 58952), (416, 51583), (728, 29476), (1456, 14738), (2912, 7369)]