19815088

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{83}}^1\times {\mathrm{347}}^1$

素因数の和:481

約数の個数: 40

約数和(自身を含む): 39872448

約数和(自身を除く): 20057360

約数列:

[1, 2, 4, 8, 16, 43, 83, 86, 166, 172, 332, 344, 347, 664, 688, 694, 1328, 1388, 2776, 3569, 5552, 7138, 14276, 14921, 28552, 28801, 29842, 57104, 57602, 59684, 115204, 119368, 230408, 238736, 460816, 1238443, 2476886, 4953772, 9907544, 19815088]

約数ペア:

[(1, 19815088), (2, 9907544), (4, 4953772), (8, 2476886), (16, 1238443), (43, 460816), (83, 238736), (86, 230408), (166, 119368), (172, 115204), (332, 59684), (344, 57602), (347, 57104), (664, 29842), (688, 28801), (694, 28552), (1328, 14921), (1388, 14276), (2776, 7138), (3569, 5552)]