19909888

素因数分解:

$2^8\times {\mathrm{77773}}^1$

素因数の和:77789

約数の個数: 18

約数和(自身を含む): 39742514

約数和(自身を除く): 19832626

約数列:

[1, 2, 4, 8, 16, 32, 64, 128, 256, 77773, 155546, 311092, 622184, 1244368, 2488736, 4977472, 9954944, 19909888]

約数ペア:

[(1, 19909888), (2, 9954944), (4, 4977472), (8, 2488736), (16, 1244368), (32, 622184), (64, 311092), (128, 155546), (256, 77773)]