38640021

素因数分解:

$3^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{149}}^1\times {\mathrm{233}}^1$

素因数の和:445

約数の個数: 32

約数和(自身を含む): 60652800

約数和(自身を除く): 22012779

約数列:

[1, 3, 7, 21, 53, 149, 159, 233, 371, 447, 699, 1043, 1113, 1631, 3129, 4893, 7897, 12349, 23691, 34717, 37047, 55279, 86443, 104151, 165837, 243019, 259329, 729057, 1840001, 5520003, 12880007, 38640021]

約数ペア:

[(1, 38640021), (3, 12880007), (7, 5520003), (21, 1840001), (53, 729057), (149, 259329), (159, 243019), (233, 165837), (371, 104151), (447, 86443), (699, 55279), (1043, 37047), (1113, 34717), (1631, 23691), (3129, 12349), (4893, 7897)]