15981196

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^2\times {\mathrm{53}}^1\times {\mathrm{89}}^1$

素因数の和:175

約数の個数: 72

約数和(自身を含む): 36197280

約数和(自身を除く): 20216084

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 53, 77, 89, 106, 121, 154, 178, 212, 242, 308, 356, 371, 484, 583, 623, 742, 847, 979, 1166, 1246, 1484, 1694, 1958, 2332, 2492, 3388, 3916, 4081, 4717, 6413, 6853, 8162, 9434, 10769, 12826, 13706, 16324, 18868, 21538, 25652, 27412, 33019, 43076, 44891, 51887, 66038, 75383, 89782, 103774, 132076, 150766, 179564, 207548, 301532, 363209, 570757, 726418, 1141514, 1452836, 2283028, 3995299, 7990598, 15981196]

約数ペア:

[(1, 15981196), (2, 7990598), (4, 3995299), (7, 2283028), (11, 1452836), (14, 1141514), (22, 726418), (28, 570757), (44, 363209), (53, 301532), (77, 207548), (89, 179564), (106, 150766), (121, 132076), (154, 103774), (178, 89782), (212, 75383), (242, 66038), (308, 51887), (356, 44891), (371, 43076), (484, 33019), (583, 27412), (623, 25652), (742, 21538), (847, 18868), (979, 16324), (1166, 13706), (1246, 12826), (1484, 10769), (1694, 9434), (1958, 8162), (2332, 6853), (2492, 6413), (3388, 4717), (3916, 4081)]