81517904

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{20627}}^1$

素因数の和:20667

約数の個数: 40

約数和(自身を含む): 179051040

約数和(自身を除く): 97533136

約数列:

[1, 2, 4, 8, 13, 16, 19, 26, 38, 52, 76, 104, 152, 208, 247, 304, 494, 988, 1976, 3952, 20627, 41254, 82508, 165016, 268151, 330032, 391913, 536302, 783826, 1072604, 1567652, 2145208, 3135304, 4290416, 5094869, 6270608, 10189738, 20379476, 40758952, 81517904]

約数ペア:

[(1, 81517904), (2, 40758952), (4, 20379476), (8, 10189738), (13, 6270608), (16, 5094869), (19, 4290416), (26, 3135304), (38, 2145208), (52, 1567652), (76, 1072604), (104, 783826), (152, 536302), (208, 391913), (247, 330032), (304, 268151), (494, 165016), (988, 82508), (1976, 41254), (3952, 20627)]