70987820

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{179}}^1\times {\mathrm{251}}^1$

素因数の和:518

約数の個数: 48

約数和(自身を含む): 152409600

約数和(自身を除く): 81421780

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 179, 251, 316, 358, 395, 502, 716, 790, 895, 1004, 1255, 1580, 1790, 2510, 3580, 5020, 14141, 19829, 28282, 39658, 44929, 56564, 70705, 79316, 89858, 99145, 141410, 179716, 198290, 224645, 282820, 396580, 449290, 898580, 3549391, 7098782, 14197564, 17746955, 35493910, 70987820]

約数ペア:

[(1, 70987820), (2, 35493910), (4, 17746955), (5, 14197564), (10, 7098782), (20, 3549391), (79, 898580), (158, 449290), (179, 396580), (251, 282820), (316, 224645), (358, 198290), (395, 179716), (502, 141410), (716, 99145), (790, 89858), (895, 79316), (1004, 70705), (1255, 56564), (1580, 44929), (1790, 39658), (2510, 28282), (3580, 19829), (5020, 14141)]