28784145

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{457}}^1$

素因数の和:514

約数の個数: 64

約数和(自身を含む): 55399680

約数和(自身を除く): 26615535

約数列:

[1, 3, 5, 13, 15, 17, 19, 39, 51, 57, 65, 85, 95, 195, 221, 247, 255, 285, 323, 457, 663, 741, 969, 1105, 1235, 1371, 1615, 2285, 3315, 3705, 4199, 4845, 5941, 6855, 7769, 8683, 12597, 17823, 20995, 23307, 26049, 29705, 38845, 43415, 62985, 89115, 100997, 112879, 116535, 130245, 147611, 302991, 338637, 442833, 504985, 564395, 738055, 1514955, 1693185, 1918943, 2214165, 5756829, 9594715, 28784145]

約数ペア:

[(1, 28784145), (3, 9594715), (5, 5756829), (13, 2214165), (15, 1918943), (17, 1693185), (19, 1514955), (39, 738055), (51, 564395), (57, 504985), (65, 442833), (85, 338637), (95, 302991), (195, 147611), (221, 130245), (247, 116535), (255, 112879), (285, 100997), (323, 89115), (457, 62985), (663, 43415), (741, 38845), (969, 29705), (1105, 26049), (1235, 23307), (1371, 20995), (1615, 17823), (2285, 12597), (3315, 8683), (3705, 7769), (4199, 6855), (4845, 5941)]