19944544

素因数分解:

$2^5\times {\mathrm{47}}^1\times {\mathrm{89}}^1\times {\mathrm{149}}^1$

素因数の和:295

約数の個数: 48

約数和(自身を含む): 40824000

約数和(自身を除く): 20879456

約数列:

[1, 2, 4, 8, 16, 32, 47, 89, 94, 149, 178, 188, 298, 356, 376, 596, 712, 752, 1192, 1424, 1504, 2384, 2848, 4183, 4768, 7003, 8366, 13261, 14006, 16732, 26522, 28012, 33464, 53044, 56024, 66928, 106088, 112048, 133856, 212176, 224096, 424352, 623267, 1246534, 2493068, 4986136, 9972272, 19944544]

約数ペア:

[(1, 19944544), (2, 9972272), (4, 4986136), (8, 2493068), (16, 1246534), (32, 623267), (47, 424352), (89, 224096), (94, 212176), (149, 133856), (178, 112048), (188, 106088), (298, 66928), (356, 56024), (376, 53044), (596, 33464), (712, 28012), (752, 26522), (1192, 16732), (1424, 14006), (1504, 13261), (2384, 8366), (2848, 7003), (4183, 4768)]