20089867880

素因数分解:

$2^3\times 5^1\times {\mathrm{97}}^1\times {\mathrm{5177801}}^1$

素因数の和:5177909

約数の個数: 32

約数和(自身を含む): 45668213640

約数和(自身を除く): 25578345760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 97, 194, 388, 485, 776, 970, 1940, 3880, 5177801, 10355602, 20711204, 25889005, 41422408, 51778010, 103556020, 207112040, 502246697, 1004493394, 2008986788, 2511233485, 4017973576, 5022466970, 10044933940, 20089867880]

約数ペア:

[(1, 20089867880), (2, 10044933940), (4, 5022466970), (5, 4017973576), (8, 2511233485), (10, 2008986788), (20, 1004493394), (40, 502246697), (97, 207112040), (194, 103556020), (388, 51778010), (485, 41422408), (776, 25889005), (970, 20711204), (1940, 10355602), (3880, 5177801)]