21995996

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{83}}^1\times {\mathrm{317}}^1$

素因数の和:434

約数の個数: 48

約数和(自身を含む): 44876160

約数和(自身を除く): 22880164

約数列:

[1, 2, 4, 11, 19, 22, 38, 44, 76, 83, 166, 209, 317, 332, 418, 634, 836, 913, 1268, 1577, 1826, 3154, 3487, 3652, 6023, 6308, 6974, 12046, 13948, 17347, 24092, 26311, 34694, 52622, 66253, 69388, 105244, 132506, 265012, 289421, 499909, 578842, 999818, 1157684, 1999636, 5498999, 10997998, 21995996]

約数ペア:

[(1, 21995996), (2, 10997998), (4, 5498999), (11, 1999636), (19, 1157684), (22, 999818), (38, 578842), (44, 499909), (76, 289421), (83, 265012), (166, 132506), (209, 105244), (317, 69388), (332, 66253), (418, 52622), (634, 34694), (836, 26311), (913, 24092), (1268, 17347), (1577, 13948), (1826, 12046), (3154, 6974), (3487, 6308), (3652, 6023)]