18938972

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{661}}^1$

素因数の和:726

約数の個数: 48

約数和(自身を含む): 38925600

約数和(自身を除く): 19986628

約数列:

[1, 2, 4, 13, 19, 26, 29, 38, 52, 58, 76, 116, 247, 377, 494, 551, 661, 754, 988, 1102, 1322, 1508, 2204, 2644, 7163, 8593, 12559, 14326, 17186, 19169, 25118, 28652, 34372, 38338, 50236, 76676, 163267, 249197, 326534, 364211, 498394, 653068, 728422, 996788, 1456844, 4734743, 9469486, 18938972]

約数ペア:

[(1, 18938972), (2, 9469486), (4, 4734743), (13, 1456844), (19, 996788), (26, 728422), (29, 653068), (38, 498394), (52, 364211), (58, 326534), (76, 249197), (116, 163267), (247, 76676), (377, 50236), (494, 38338), (551, 34372), (661, 28652), (754, 25118), (988, 19169), (1102, 17186), (1322, 14326), (1508, 12559), (2204, 8593), (2644, 7163)]