28076775

素因数分解:

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

素因数の和:129

約数の個数: 72

約数和(自身を含む): 52724304

約数和(自身を除く): 24647529

約数列:

[1, 3, 5, 15, 17, 19, 25, 51, 57, 61, 75, 85, 95, 183, 255, 285, 305, 323, 361, 425, 475, 915, 969, 1037, 1083, 1159, 1275, 1425, 1525, 1615, 1805, 3111, 3477, 4575, 4845, 5185, 5415, 5795, 6137, 8075, 9025, 15555, 17385, 18411, 19703, 22021, 24225, 25925, 27075, 28975, 30685, 59109, 66063, 77775, 86925, 92055, 98515, 110105, 153425, 295545, 330315, 374357, 460275, 492575, 550525, 1123071, 1477725, 1651575, 1871785, 5615355, 9358925, 28076775]

約数ペア:

[(1, 28076775), (3, 9358925), (5, 5615355), (15, 1871785), (17, 1651575), (19, 1477725), (25, 1123071), (51, 550525), (57, 492575), (61, 460275), (75, 374357), (85, 330315), (95, 295545), (183, 153425), (255, 110105), (285, 98515), (305, 92055), (323, 86925), (361, 77775), (425, 66063), (475, 59109), (915, 30685), (969, 28975), (1037, 27075), (1083, 25925), (1159, 24225), (1275, 22021), (1425, 19703), (1525, 18411), (1615, 17385), (1805, 15555), (3111, 9025), (3477, 8075), (4575, 6137), (4845, 5795), (5185, 5415)]