28061985

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{199}}^1$

素因数の和:310

約数の個数: 64

約数和(自身を含む): 55296000

約数和(自身を除く): 27234015

約数列:

[1, 3, 5, 7, 15, 17, 21, 35, 51, 79, 85, 105, 119, 199, 237, 255, 357, 395, 553, 595, 597, 995, 1185, 1343, 1393, 1659, 1785, 2765, 2985, 3383, 4029, 4179, 6715, 6965, 8295, 9401, 10149, 15721, 16915, 20145, 20895, 23681, 28203, 47005, 47163, 50745, 71043, 78605, 110047, 118405, 141015, 235815, 267257, 330141, 355215, 550235, 801771, 1336285, 1650705, 1870799, 4008855, 5612397, 9353995, 28061985]

約数ペア:

[(1, 28061985), (3, 9353995), (5, 5612397), (7, 4008855), (15, 1870799), (17, 1650705), (21, 1336285), (35, 801771), (51, 550235), (79, 355215), (85, 330141), (105, 267257), (119, 235815), (199, 141015), (237, 118405), (255, 110047), (357, 78605), (395, 71043), (553, 50745), (595, 47163), (597, 47005), (995, 28203), (1185, 23681), (1343, 20895), (1393, 20145), (1659, 16915), (1785, 15721), (2765, 10149), (2985, 9401), (3383, 8295), (4029, 6965), (4179, 6715)]