19975840

素因数分解:

$2^5\times 5^1\times {\mathrm{19}}^1\times {\mathrm{6571}}^1$

素因数の和:6605

約数の個数: 48

約数和(自身を含む): 49684320

約数和(自身を除く): 29708480

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, 6571, 13142, 26284, 32855, 52568, 65710, 105136, 124849, 131420, 210272, 249698, 262840, 499396, 525680, 624245, 998792, 1051360, 1248490, 1997584, 2496980, 3995168, 4993960, 9987920, 19975840]

約数ペア:

[(1, 19975840), (2, 9987920), (4, 4993960), (5, 3995168), (8, 2496980), (10, 1997584), (16, 1248490), (19, 1051360), (20, 998792), (32, 624245), (38, 525680), (40, 499396), (76, 262840), (80, 249698), (95, 210272), (152, 131420), (160, 124849), (190, 105136), (304, 65710), (380, 52568), (608, 32855), (760, 26284), (1520, 13142), (3040, 6571)]