19881176

素因数分解:

$2^3\times 7^1\times {\mathrm{89}}^1\times {\mathrm{3989}}^1$

素因数の和:4091

約数の個数: 32

約数和(自身を含む): 43092000

約数和(自身を除く): 23210824

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 89, 178, 356, 623, 712, 1246, 2492, 3989, 4984, 7978, 15956, 27923, 31912, 55846, 111692, 223384, 355021, 710042, 1420084, 2485147, 2840168, 4970294, 9940588, 19881176]

約数ペア:

[(1, 19881176), (2, 9940588), (4, 4970294), (7, 2840168), (8, 2485147), (14, 1420084), (28, 710042), (56, 355021), (89, 223384), (178, 111692), (356, 55846), (623, 31912), (712, 27923), (1246, 15956), (2492, 7978), (3989, 4984)]