20112640

素因数分解:

$2^8\times 5^1\times {\mathrm{19}}^1\times {\mathrm{827}}^1$

素因数の和:867

約数の個数: 72

約数和(自身を含む): 50772960

約数和(自身を除く): 30660320

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, 827, 1216, 1280, 1520, 1654, 2432, 3040, 3308, 4135, 4864, 6080, 6616, 8270, 12160, 13232, 15713, 16540, 24320, 26464, 31426, 33080, 52928, 62852, 66160, 78565, 105856, 125704, 132320, 157130, 211712, 251408, 264640, 314260, 502816, 529280, 628520, 1005632, 1058560, 1257040, 2011264, 2514080, 4022528, 5028160, 10056320, 20112640]

約数ペア:

[(1, 20112640), (2, 10056320), (4, 5028160), (5, 4022528), (8, 2514080), (10, 2011264), (16, 1257040), (19, 1058560), (20, 1005632), (32, 628520), (38, 529280), (40, 502816), (64, 314260), (76, 264640), (80, 251408), (95, 211712), (128, 157130), (152, 132320), (160, 125704), (190, 105856), (256, 78565), (304, 66160), (320, 62852), (380, 52928), (608, 33080), (640, 31426), (760, 26464), (827, 24320), (1216, 16540), (1280, 15713), (1520, 13232), (1654, 12160), (2432, 8270), (3040, 6616), (3308, 6080), (4135, 4864)]