278345125

素因数分解:

$5^3\times {\mathrm{31}}^1\times {\mathrm{109}}^1\times {\mathrm{659}}^1$

素因数の和:814

約数の個数: 32

約数和(自身を含む): 362419200

約数和(自身を除く): 84074075

約数列:

[1, 5, 25, 31, 109, 125, 155, 545, 659, 775, 2725, 3295, 3379, 3875, 13625, 16475, 16895, 20429, 71831, 82375, 84475, 102145, 359155, 422375, 510725, 1795775, 2226761, 2553625, 8978875, 11133805, 55669025, 278345125]

約数ペア:

[(1, 278345125), (5, 55669025), (25, 11133805), (31, 8978875), (109, 2553625), (125, 2226761), (155, 1795775), (545, 510725), (659, 422375), (775, 359155), (2725, 102145), (3295, 84475), (3379, 82375), (3875, 71831), (13625, 20429), (16475, 16895)]