28613775

素因数分解:

$3^1\times 5^2\times {\mathrm{31}}^2\times {\mathrm{397}}^1$

素因数の和:472

約数の個数: 36

約数和(自身を含む): 49006536

約数和(自身を除く): 20392761

約数列:

[1, 3, 5, 15, 25, 31, 75, 93, 155, 397, 465, 775, 961, 1191, 1985, 2325, 2883, 4805, 5955, 9925, 12307, 14415, 24025, 29775, 36921, 61535, 72075, 184605, 307675, 381517, 923025, 1144551, 1907585, 5722755, 9537925, 28613775]

約数ペア:

[(1, 28613775), (3, 9537925), (5, 5722755), (15, 1907585), (25, 1144551), (31, 923025), (75, 381517), (93, 307675), (155, 184605), (397, 72075), (465, 61535), (775, 36921), (961, 29775), (1191, 24025), (1985, 14415), (2325, 12307), (2883, 9925), (4805, 5955)]