19398808

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{547}}^1$

素因数の和:608

約数の個数: 64

約数和(自身を含む): 44190720

約数和(自身を除く): 24791912

約数列:

[1, 2, 4, 8, 11, 13, 22, 26, 31, 44, 52, 62, 88, 104, 124, 143, 248, 286, 341, 403, 547, 572, 682, 806, 1094, 1144, 1364, 1612, 2188, 2728, 3224, 4376, 4433, 6017, 7111, 8866, 12034, 14222, 16957, 17732, 24068, 28444, 33914, 35464, 48136, 56888, 67828, 78221, 135656, 156442, 186527, 220441, 312884, 373054, 440882, 625768, 746108, 881764, 1492216, 1763528, 2424851, 4849702, 9699404, 19398808]

約数ペア:

[(1, 19398808), (2, 9699404), (4, 4849702), (8, 2424851), (11, 1763528), (13, 1492216), (22, 881764), (26, 746108), (31, 625768), (44, 440882), (52, 373054), (62, 312884), (88, 220441), (104, 186527), (124, 156442), (143, 135656), (248, 78221), (286, 67828), (341, 56888), (403, 48136), (547, 35464), (572, 33914), (682, 28444), (806, 24068), (1094, 17732), (1144, 16957), (1364, 14222), (1612, 12034), (2188, 8866), (2728, 7111), (3224, 6017), (4376, 4433)]