12951920

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{8521}}^1$

素因数の和:8553

約数の個数: 40

約数和(自身を含む): 31701840

約数和(自身を除く): 18749920

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 8521, 17042, 34084, 42605, 68168, 85210, 136336, 161899, 170420, 323798, 340840, 647596, 681680, 809495, 1295192, 1618990, 2590384, 3237980, 6475960, 12951920]

約数ペア:

[(1, 12951920), (2, 6475960), (4, 3237980), (5, 2590384), (8, 1618990), (10, 1295192), (16, 809495), (19, 681680), (20, 647596), (38, 340840), (40, 323798), (76, 170420), (80, 161899), (95, 136336), (152, 85210), (190, 68168), (304, 42605), (380, 34084), (760, 17042), (1520, 8521)]