21497996

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{83}}^1\times {\mathrm{293}}^1$

素因数の和:410

約数の個数: 48

約数和(自身を含む): 43563744

約数和(自身を除く): 22065748

約数列:

[1, 2, 4, 13, 17, 26, 34, 52, 68, 83, 166, 221, 293, 332, 442, 586, 884, 1079, 1172, 1411, 2158, 2822, 3809, 4316, 4981, 5644, 7618, 9962, 15236, 18343, 19924, 24319, 36686, 48638, 64753, 73372, 97276, 129506, 259012, 316147, 413423, 632294, 826846, 1264588, 1653692, 5374499, 10748998, 21497996]

約数ペア:

[(1, 21497996), (2, 10748998), (4, 5374499), (13, 1653692), (17, 1264588), (26, 826846), (34, 632294), (52, 413423), (68, 316147), (83, 259012), (166, 129506), (221, 97276), (293, 73372), (332, 64753), (442, 48638), (586, 36686), (884, 24319), (1079, 19924), (1172, 18343), (1411, 15236), (2158, 9962), (2822, 7618), (3809, 5644), (4316, 4981)]