81921920

素因数分解:

$2^7\times 5^1\times {\mathrm{19}}^1\times {\mathrm{6737}}^1$

素因数の和:6775

約数の個数: 64

約数和(自身を含む): 206182800

約数和(自身を除く): 124260880

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 64, 76, 80, 95, 128, 152, 160, 190, 304, 320, 380, 608, 640, 760, 1216, 1520, 2432, 3040, 6080, 6737, 12160, 13474, 26948, 33685, 53896, 67370, 107792, 128003, 134740, 215584, 256006, 269480, 431168, 512012, 538960, 640015, 862336, 1024024, 1077920, 1280030, 2048048, 2155840, 2560060, 4096096, 4311680, 5120120, 8192192, 10240240, 16384384, 20480480, 40960960, 81921920]

約数ペア:

[(1, 81921920), (2, 40960960), (4, 20480480), (5, 16384384), (8, 10240240), (10, 8192192), (16, 5120120), (19, 4311680), (20, 4096096), (32, 2560060), (38, 2155840), (40, 2048048), (64, 1280030), (76, 1077920), (80, 1024024), (95, 862336), (128, 640015), (152, 538960), (160, 512012), (190, 431168), (304, 269480), (320, 256006), (380, 215584), (608, 134740), (640, 128003), (760, 107792), (1216, 67370), (1520, 53896), (2432, 33685), (3040, 26948), (6080, 13474), (6737, 12160)]