87991945

素因数分解:

$5^1\times {\mathrm{19}}^2\times {\mathrm{29}}^1\times {\mathrm{41}}^2$

素因数の和:154

約数の個数: 36

約数和(自身を含む): 118163340

約数和(自身を除く): 30171395

約数列:

[1, 5, 19, 29, 41, 95, 145, 205, 361, 551, 779, 1189, 1681, 1805, 2755, 3895, 5945, 8405, 10469, 14801, 22591, 31939, 48749, 52345, 74005, 112955, 159695, 243745, 429229, 606841, 926231, 2146145, 3034205, 4631155, 17598389, 87991945]

約数ペア:

[(1, 87991945), (5, 17598389), (19, 4631155), (29, 3034205), (41, 2146145), (95, 926231), (145, 606841), (205, 429229), (361, 243745), (551, 159695), (779, 112955), (1189, 74005), (1681, 52345), (1805, 48749), (2755, 31939), (3895, 22591), (5945, 14801), (8405, 10469)]