81918025

素因数分解:

$5^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{347}}^1$

素因数の和:454

約数の個数: 48

約数和(自身を含む): 124277760

約数和(自身を除く): 42359735

約数列:

[1, 5, 7, 19, 25, 35, 71, 95, 133, 175, 347, 355, 475, 497, 665, 1349, 1735, 1775, 2429, 2485, 3325, 6593, 6745, 8675, 9443, 12145, 12425, 24637, 32965, 33725, 46151, 47215, 60725, 123185, 164825, 172459, 230755, 236075, 468103, 615925, 862295, 1153775, 2340515, 3276721, 4311475, 11702575, 16383605, 81918025]

約数ペア:

[(1, 81918025), (5, 16383605), (7, 11702575), (19, 4311475), (25, 3276721), (35, 2340515), (71, 1153775), (95, 862295), (133, 615925), (175, 468103), (347, 236075), (355, 230755), (475, 172459), (497, 164825), (665, 123185), (1349, 60725), (1735, 47215), (1775, 46151), (2429, 33725), (2485, 32965), (3325, 24637), (6593, 12425), (6745, 12145), (8675, 9443)]