19538168

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{257}}^1$

素因数の和:336

約数の個数: 64

約数和(自身を含む): 42910560

約数和(自身を除く): 23372392

約数列:

[1, 2, 4, 8, 13, 17, 26, 34, 43, 52, 68, 86, 104, 136, 172, 221, 257, 344, 442, 514, 559, 731, 884, 1028, 1118, 1462, 1768, 2056, 2236, 2924, 3341, 4369, 4472, 5848, 6682, 8738, 9503, 11051, 13364, 17476, 19006, 22102, 26728, 34952, 38012, 44204, 56797, 76024, 88408, 113594, 143663, 187867, 227188, 287326, 375734, 454376, 574652, 751468, 1149304, 1502936, 2442271, 4884542, 9769084, 19538168]

約数ペア:

[(1, 19538168), (2, 9769084), (4, 4884542), (8, 2442271), (13, 1502936), (17, 1149304), (26, 751468), (34, 574652), (43, 454376), (52, 375734), (68, 287326), (86, 227188), (104, 187867), (136, 143663), (172, 113594), (221, 88408), (257, 76024), (344, 56797), (442, 44204), (514, 38012), (559, 34952), (731, 26728), (884, 22102), (1028, 19006), (1118, 17476), (1462, 13364), (1768, 11051), (2056, 9503), (2236, 8738), (2924, 6682), (3341, 5848), (4369, 4472)]