19808908

素因数分解:

$2^2\times 7^1\times {\mathrm{89}}^1\times {\mathrm{7949}}^1$

素因数の和:8049

約数の個数: 24

約数和(自身を含む): 40068000

約数和(自身を除く): 20259092

約数列:

[1, 2, 4, 7, 14, 28, 89, 178, 356, 623, 1246, 2492, 7949, 15898, 31796, 55643, 111286, 222572, 707461, 1414922, 2829844, 4952227, 9904454, 19808908]

約数ペア:

[(1, 19808908), (2, 9904454), (4, 4952227), (7, 2829844), (14, 1414922), (28, 707461), (89, 222572), (178, 111286), (356, 55643), (623, 31796), (1246, 15898), (2492, 7949)]