90991945

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{131}}^1\times {\mathrm{173}}^1$

素因数の和:393

約数の個数: 32

約数和(自身を含む): 122373504

約数和(自身を除く): 31381559

約数列:

[1, 5, 11, 55, 73, 131, 173, 365, 655, 803, 865, 1441, 1903, 4015, 7205, 9515, 9563, 12629, 22663, 47815, 63145, 105193, 113315, 138919, 249293, 525965, 694595, 1246465, 1654399, 8271995, 18198389, 90991945]

約数ペア:

[(1, 90991945), (5, 18198389), (11, 8271995), (55, 1654399), (73, 1246465), (131, 694595), (173, 525965), (365, 249293), (655, 138919), (803, 113315), (865, 105193), (1441, 63145), (1903, 47815), (4015, 22663), (7205, 12629), (9515, 9563)]