20853866

素因数分解:

$2^1\times {\mathrm{11}}^2\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{137}}^1$

素因数の和:215

約数の個数: 48

約数和(自身を含む): 37662408

約数和(自身を除く): 16808542

約数列:

[1, 2, 11, 17, 22, 34, 37, 74, 121, 137, 187, 242, 274, 374, 407, 629, 814, 1258, 1507, 2057, 2329, 3014, 4114, 4477, 4658, 5069, 6919, 8954, 10138, 13838, 16577, 25619, 33154, 51238, 55759, 76109, 86173, 111518, 152218, 172346, 281809, 563618, 613349, 947903, 1226698, 1895806, 10426933, 20853866]

約数ペア:

[(1, 20853866), (2, 10426933), (11, 1895806), (17, 1226698), (22, 947903), (34, 613349), (37, 563618), (74, 281809), (121, 172346), (137, 152218), (187, 111518), (242, 86173), (274, 76109), (374, 55759), (407, 51238), (629, 33154), (814, 25619), (1258, 16577), (1507, 13838), (2057, 10138), (2329, 8954), (3014, 6919), (4114, 5069), (4477, 4658)]