18868675

素因数分解:

$5^2\times 7^2\times {\mathrm{73}}^1\times {\mathrm{211}}^1$

素因数の和:308

約数の個数: 36

約数和(自身を含む): 27720696

約数和(自身を除く): 8852021

約数列:

[1, 5, 7, 25, 35, 49, 73, 175, 211, 245, 365, 511, 1055, 1225, 1477, 1825, 2555, 3577, 5275, 7385, 10339, 12775, 15403, 17885, 36925, 51695, 77015, 89425, 107821, 258475, 385075, 539105, 754747, 2695525, 3773735, 18868675]

約数ペア:

[(1, 18868675), (5, 3773735), (7, 2695525), (25, 754747), (35, 539105), (49, 385075), (73, 258475), (175, 107821), (211, 89425), (245, 77015), (365, 51695), (511, 36925), (1055, 17885), (1225, 15403), (1477, 12775), (1825, 10339), (2555, 7385), (3577, 5275)]