20845280

素因数分解:

$2^5\times 5^1\times {\mathrm{19}}^1\times {\mathrm{6857}}^1$

素因数の和:6891

約数の個数: 48

約数和(自身を含む): 51846480

約数和(自身を除く): 31001200

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 76, 80, 95, 152, 160, 190, 304, 380, 608, 760, 1520, 3040, 6857, 13714, 27428, 34285, 54856, 68570, 109712, 130283, 137140, 219424, 260566, 274280, 521132, 548560, 651415, 1042264, 1097120, 1302830, 2084528, 2605660, 4169056, 5211320, 10422640, 20845280]

約数ペア:

[(1, 20845280), (2, 10422640), (4, 5211320), (5, 4169056), (8, 2605660), (10, 2084528), (16, 1302830), (19, 1097120), (20, 1042264), (32, 651415), (38, 548560), (40, 521132), (76, 274280), (80, 260566), (95, 219424), (152, 137140), (160, 130283), (190, 109712), (304, 68570), (380, 54856), (608, 34285), (760, 27428), (1520, 13714), (3040, 6857)]