28991245

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{151}}^1$

素因数の和:265

約数の個数: 32

約数和(自身を含む): 38522880

約数和(自身を除く): 9531635

約数列:

[1, 5, 19, 43, 47, 95, 151, 215, 235, 755, 817, 893, 2021, 2869, 4085, 4465, 6493, 7097, 10105, 14345, 32465, 35485, 38399, 123367, 134843, 191995, 305171, 616835, 674215, 1525855, 5798249, 28991245]

約数ペア:

[(1, 28991245), (5, 5798249), (19, 1525855), (43, 674215), (47, 616835), (95, 305171), (151, 191995), (215, 134843), (235, 123367), (755, 38399), (817, 35485), (893, 32465), (2021, 14345), (2869, 10105), (4085, 7097), (4465, 6493)]