19902310

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^2\times {\mathrm{109}}^1$

素因数の和:197

約数の個数: 48

約数和(自身を含む): 39322800

約数和(自身を除く): 19420490

約数列:

[1, 2, 5, 10, 19, 31, 38, 62, 95, 109, 155, 190, 218, 310, 545, 589, 961, 1090, 1178, 1922, 2071, 2945, 3379, 4142, 4805, 5890, 6758, 9610, 10355, 16895, 18259, 20710, 33790, 36518, 64201, 91295, 104749, 128402, 182590, 209498, 321005, 523745, 642010, 1047490, 1990231, 3980462, 9951155, 19902310]

約数ペア:

[(1, 19902310), (2, 9951155), (5, 3980462), (10, 1990231), (19, 1047490), (31, 642010), (38, 523745), (62, 321005), (95, 209498), (109, 182590), (155, 128402), (190, 104749), (218, 91295), (310, 64201), (545, 36518), (589, 33790), (961, 20710), (1090, 18259), (1178, 16895), (1922, 10355), (2071, 9610), (2945, 6758), (3379, 5890), (4142, 4805)]