205403775

素因数分解:

$3^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{139}}^1$

素因数の和:249

約数の個数: 96

約数和(自身を含む): 387475200

約数和(自身を除く): 182071425

約数列:

[1, 3, 5, 15, 17, 19, 25, 51, 57, 61, 75, 85, 95, 139, 183, 255, 285, 305, 323, 417, 425, 475, 695, 915, 969, 1037, 1159, 1275, 1425, 1525, 1615, 2085, 2363, 2641, 3111, 3475, 3477, 4575, 4845, 5185, 5795, 7089, 7923, 8075, 8479, 10425, 11815, 13205, 15555, 17385, 19703, 24225, 25437, 25925, 28975, 35445, 39615, 42395, 44897, 59075, 59109, 66025, 77775, 86925, 98515, 127185, 134691, 144143, 161101, 177225, 198075, 211975, 224485, 295545, 432429, 483303, 492575, 635925, 673455, 720715, 805505, 1122425, 1477725, 2162145, 2416515, 2738717, 3367275, 3603575, 4027525, 8216151, 10810725, 12082575, 13693585, 41080755, 68467925, 205403775]

約数ペア:

[(1, 205403775), (3, 68467925), (5, 41080755), (15, 13693585), (17, 12082575), (19, 10810725), (25, 8216151), (51, 4027525), (57, 3603575), (61, 3367275), (75, 2738717), (85, 2416515), (95, 2162145), (139, 1477725), (183, 1122425), (255, 805505), (285, 720715), (305, 673455), (323, 635925), (417, 492575), (425, 483303), (475, 432429), (695, 295545), (915, 224485), (969, 211975), (1037, 198075), (1159, 177225), (1275, 161101), (1425, 144143), (1525, 134691), (1615, 127185), (2085, 98515), (2363, 86925), (2641, 77775), (3111, 66025), (3475, 59109), (3477, 59075), (4575, 44897), (4845, 42395), (5185, 39615), (5795, 35445), (7089, 28975), (7923, 25925), (8075, 25437), (8479, 24225), (10425, 19703), (11815, 17385), (13205, 15555)]