20015360

素因数分解:

$2^8\times 5^1\times {\mathrm{19}}^1\times {\mathrm{823}}^1$

素因数の和:863

約数の個数: 72

約数和(自身を含む): 50527680

約数和(自身を除く): 30512320

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 64, 76, 80, 95, 128, 152, 160, 190, 256, 304, 320, 380, 608, 640, 760, 823, 1216, 1280, 1520, 1646, 2432, 3040, 3292, 4115, 4864, 6080, 6584, 8230, 12160, 13168, 15637, 16460, 24320, 26336, 31274, 32920, 52672, 62548, 65840, 78185, 105344, 125096, 131680, 156370, 210688, 250192, 263360, 312740, 500384, 526720, 625480, 1000768, 1053440, 1250960, 2001536, 2501920, 4003072, 5003840, 10007680, 20015360]

約数ペア:

[(1, 20015360), (2, 10007680), (4, 5003840), (5, 4003072), (8, 2501920), (10, 2001536), (16, 1250960), (19, 1053440), (20, 1000768), (32, 625480), (38, 526720), (40, 500384), (64, 312740), (76, 263360), (80, 250192), (95, 210688), (128, 156370), (152, 131680), (160, 125096), (190, 105344), (256, 78185), (304, 65840), (320, 62548), (380, 52672), (608, 32920), (640, 31274), (760, 26336), (823, 24320), (1216, 16460), (1280, 15637), (1520, 13168), (1646, 12160), (2432, 8230), (3040, 6584), (3292, 6080), (4115, 4864)]