21000724784

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{5939119}}^1$

素因数の和:5939157

約数の個数: 40

約数和(自身を含む): 46396405440

約数和(自身を除く): 25395680656

約数列:

[1, 2, 4, 8, 13, 16, 17, 26, 34, 52, 68, 104, 136, 208, 221, 272, 442, 884, 1768, 3536, 5939119, 11878238, 23756476, 47512952, 77208547, 95025904, 100965023, 154417094, 201930046, 308834188, 403860092, 617668376, 807720184, 1235336752, 1312545299, 1615440368, 2625090598, 5250181196, 10500362392, 21000724784]

約数ペア:

[(1, 21000724784), (2, 10500362392), (4, 5250181196), (8, 2625090598), (13, 1615440368), (16, 1312545299), (17, 1235336752), (26, 807720184), (34, 617668376), (52, 403860092), (68, 308834188), (104, 201930046), (136, 154417094), (208, 100965023), (221, 95025904), (272, 77208547), (442, 47512952), (884, 23756476), (1768, 11878238), (3536, 5939119)]