19689808

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{191}}^1\times {\mathrm{379}}^1$

素因数の和:595

約数の個数: 40

約数和(自身を含む): 40711680

約数和(自身を除く): 21021872

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 191, 272, 379, 382, 758, 764, 1516, 1528, 3032, 3056, 3247, 6064, 6443, 6494, 12886, 12988, 25772, 25976, 51544, 51952, 72389, 103088, 144778, 289556, 579112, 1158224, 1230613, 2461226, 4922452, 9844904, 19689808]

約数ペア:

[(1, 19689808), (2, 9844904), (4, 4922452), (8, 2461226), (16, 1230613), (17, 1158224), (34, 579112), (68, 289556), (136, 144778), (191, 103088), (272, 72389), (379, 51952), (382, 51544), (758, 25976), (764, 25772), (1516, 12988), (1528, 12886), (3032, 6494), (3056, 6443), (3247, 6064)]