19706375

素因数分解:

$5^3\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{181}}^1$

素因数の和:276

約数の個数: 32

約数和(自身を含む): 27029184

約数和(自身を除く): 7322809

約数列:

[1, 5, 13, 25, 65, 67, 125, 181, 325, 335, 871, 905, 1625, 1675, 2353, 4355, 4525, 8375, 11765, 12127, 21775, 22625, 58825, 60635, 108875, 157651, 294125, 303175, 788255, 1515875, 3941275, 19706375]

約数ペア:

[(1, 19706375), (5, 3941275), (13, 1515875), (25, 788255), (65, 303175), (67, 294125), (125, 157651), (181, 108875), (325, 60635), (335, 58825), (871, 22625), (905, 21775), (1625, 12127), (1675, 11765), (2353, 8375), (4355, 4525)]