81994455

素因数分解:

$3^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{83}}^1\times {\mathrm{757}}^1$

素因数の和:880

約数の個数: 48

約数和(自身を含む): 148992480

約数和(自身を除く): 66998025

約数列:

[1, 3, 5, 9, 15, 29, 45, 83, 87, 145, 249, 261, 415, 435, 747, 757, 1245, 1305, 2271, 2407, 3735, 3785, 6813, 7221, 11355, 12035, 21663, 21953, 34065, 36105, 62831, 65859, 108315, 109765, 188493, 197577, 314155, 329295, 565479, 942465, 987885, 1822099, 2827395, 5466297, 9110495, 16398891, 27331485, 81994455]

約数ペア:

[(1, 81994455), (3, 27331485), (5, 16398891), (9, 9110495), (15, 5466297), (29, 2827395), (45, 1822099), (83, 987885), (87, 942465), (145, 565479), (249, 329295), (261, 314155), (415, 197577), (435, 188493), (747, 109765), (757, 108315), (1245, 65859), (1305, 62831), (2271, 36105), (2407, 34065), (3735, 21953), (3785, 21663), (6813, 12035), (7221, 11355)]