19913777185

素因数分解:

$5^1\times {\mathrm{53}}^1\times {\mathrm{67}}^1\times {\mathrm{71}}^1\times {\mathrm{15797}}^1$

素因数の和:15993

約数の個数: 32

約数和(自身を含む): 25060430592

約数和(自身を除く): 5146653407

約数列:

[1, 5, 53, 67, 71, 265, 335, 355, 3551, 3763, 4757, 15797, 17755, 18815, 23785, 78985, 252121, 837241, 1058399, 1121587, 1260605, 4186205, 5291995, 5607935, 56095147, 59444111, 75146329, 280475735, 297220555, 375731645, 3982755437, 19913777185]

約数ペア:

[(1, 19913777185), (5, 3982755437), (53, 375731645), (67, 297220555), (71, 280475735), (265, 75146329), (335, 59444111), (355, 56095147), (3551, 5607935), (3763, 5291995), (4757, 4186205), (15797, 1260605), (17755, 1121587), (18815, 1058399), (23785, 837241), (78985, 252121)]