20399512

素因数分解:

$2^3\times 7^1\times {\mathrm{89}}^1\times {\mathrm{4093}}^1$

素因数の和:4195

約数の個数: 32

約数和(自身を含む): 44215200

約数和(自身を除く): 23815688

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 89, 178, 356, 623, 712, 1246, 2492, 4093, 4984, 8186, 16372, 28651, 32744, 57302, 114604, 229208, 364277, 728554, 1457108, 2549939, 2914216, 5099878, 10199756, 20399512]

約数ペア:

[(1, 20399512), (2, 10199756), (4, 5099878), (7, 2914216), (8, 2549939), (14, 1457108), (28, 728554), (56, 364277), (89, 229208), (178, 114604), (356, 57302), (623, 32744), (712, 28651), (1246, 16372), (2492, 8186), (4093, 4984)]