20187718473

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{97}}^1\times {\mathrm{75161}}^1$

素因数の和:75345

約数の個数: 32

約数和(自身を含む): 29699212032

約数和(自身を除く): 9511493559

約数列:

[1, 3, 13, 39, 71, 97, 213, 291, 923, 1261, 2769, 3783, 6887, 20661, 75161, 89531, 225483, 268593, 977093, 2931279, 5336431, 7290617, 16009293, 21871851, 69373603, 94778021, 208120809, 284334063, 517633807, 1552901421, 6729239491, 20187718473]

約数ペア:

[(1, 20187718473), (3, 6729239491), (13, 1552901421), (39, 517633807), (71, 284334063), (97, 208120809), (213, 94778021), (291, 69373603), (923, 21871851), (1261, 16009293), (2769, 7290617), (3783, 5336431), (6887, 2931279), (20661, 977093), (75161, 268593), (89531, 225483)]