21000921616

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{83}}^1\times {\mathrm{14107}}^1$

素因数の和:14276

約数の個数: 80

約数和(自身を含む): 44084678400

約数和(自身を除く): 23083756784

約数列:

[1, 2, 4, 8, 16, 19, 38, 59, 76, 83, 118, 152, 166, 236, 304, 332, 472, 664, 944, 1121, 1328, 1577, 2242, 3154, 4484, 4897, 6308, 8968, 9794, 12616, 14107, 17936, 19588, 25232, 28214, 39176, 56428, 78352, 93043, 112856, 186086, 225712, 268033, 372172, 536066, 744344, 832313, 1072132, 1170881, 1488688, 1664626, 2144264, 2341762, 3329252, 4288528, 4683524, 6658504, 9367048, 13317008, 15813947, 18734096, 22246739, 31627894, 44493478, 63255788, 69081979, 88986956, 126511576, 138163958, 177973912, 253023152, 276327916, 355947824, 552655832, 1105311664, 1312557601, 2625115202, 5250230404, 10500460808, 21000921616]

約数ペア:

[(1, 21000921616), (2, 10500460808), (4, 5250230404), (8, 2625115202), (16, 1312557601), (19, 1105311664), (38, 552655832), (59, 355947824), (76, 276327916), (83, 253023152), (118, 177973912), (152, 138163958), (166, 126511576), (236, 88986956), (304, 69081979), (332, 63255788), (472, 44493478), (664, 31627894), (944, 22246739), (1121, 18734096), (1328, 15813947), (1577, 13317008), (2242, 9367048), (3154, 6658504), (4484, 4683524), (4897, 4288528), (6308, 3329252), (8968, 2341762), (9794, 2144264), (12616, 1664626), (14107, 1488688), (17936, 1170881), (19588, 1072132), (25232, 832313), (28214, 744344), (39176, 536066), (56428, 372172), (78352, 268033), (93043, 225712), (112856, 186086)]