20805220818

素因数分解:

$2^1\times 3^4\times {\mathrm{19}}^1\times {\mathrm{2137}}^1\times {\mathrm{3163}}^1$

素因数の和:5333

約数の個数: 80

約数和(自身を含む): 49111228320

約数和(自身を除く): 28306007502

約数列:

[1, 2, 3, 6, 9, 18, 19, 27, 38, 54, 57, 81, 114, 162, 171, 342, 513, 1026, 1539, 2137, 3078, 3163, 4274, 6326, 6411, 9489, 12822, 18978, 19233, 28467, 38466, 40603, 56934, 57699, 60097, 81206, 85401, 115398, 120194, 121809, 170802, 173097, 180291, 243618, 256203, 346194, 360582, 365427, 512406, 540873, 730854, 1081746, 1096281, 1622619, 2192562, 3245238, 3288843, 4867857, 6577686, 6759331, 9735714, 13518662, 20277993, 40555986, 60833979, 121667958, 128427289, 182501937, 256854578, 365003874, 385281867, 547505811, 770563734, 1095011622, 1155845601, 2311691202, 3467536803, 6935073606, 10402610409, 20805220818]

約数ペア:

[(1, 20805220818), (2, 10402610409), (3, 6935073606), (6, 3467536803), (9, 2311691202), (18, 1155845601), (19, 1095011622), (27, 770563734), (38, 547505811), (54, 385281867), (57, 365003874), (81, 256854578), (114, 182501937), (162, 128427289), (171, 121667958), (342, 60833979), (513, 40555986), (1026, 20277993), (1539, 13518662), (2137, 9735714), (3078, 6759331), (3163, 6577686), (4274, 4867857), (6326, 3288843), (6411, 3245238), (9489, 2192562), (12822, 1622619), (18978, 1096281), (19233, 1081746), (28467, 730854), (38466, 540873), (40603, 512406), (56934, 365427), (57699, 360582), (60097, 346194), (81206, 256203), (85401, 243618), (115398, 180291), (120194, 173097), (121809, 170802)]