20999142

素因数分解:

$2^1\times 3^3\times {\mathrm{19}}^1\times {\mathrm{97}}^1\times {\mathrm{211}}^1$

素因数の和:338

約数の個数: 64

約数和(自身を含む): 49862400

約数和(自身を除く): 28863258

約数列:

[1, 2, 3, 6, 9, 18, 19, 27, 38, 54, 57, 97, 114, 171, 194, 211, 291, 342, 422, 513, 582, 633, 873, 1026, 1266, 1746, 1843, 1899, 2619, 3686, 3798, 4009, 5238, 5529, 5697, 8018, 11058, 11394, 12027, 16587, 20467, 24054, 33174, 36081, 40934, 49761, 61401, 72162, 99522, 108243, 122802, 184203, 216486, 368406, 388873, 552609, 777746, 1105218, 1166619, 2333238, 3499857, 6999714, 10499571, 20999142]

約数ペア:

[(1, 20999142), (2, 10499571), (3, 6999714), (6, 3499857), (9, 2333238), (18, 1166619), (19, 1105218), (27, 777746), (38, 552609), (54, 388873), (57, 368406), (97, 216486), (114, 184203), (171, 122802), (194, 108243), (211, 99522), (291, 72162), (342, 61401), (422, 49761), (513, 40934), (582, 36081), (633, 33174), (873, 24054), (1026, 20467), (1266, 16587), (1746, 12027), (1843, 11394), (1899, 11058), (2619, 8018), (3686, 5697), (3798, 5529), (4009, 5238)]