19815160

素因数分解:

$2^3\times 5^1\times {\mathrm{97}}^1\times {\mathrm{5107}}^1$

素因数の和:5215

約数の個数: 32

約数和(自身を含む): 45052560

約数和(自身を除く): 25237400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 97, 194, 388, 485, 776, 970, 1940, 3880, 5107, 10214, 20428, 25535, 40856, 51070, 102140, 204280, 495379, 990758, 1981516, 2476895, 3963032, 4953790, 9907580, 19815160]

約数ペア:

[(1, 19815160), (2, 9907580), (4, 4953790), (5, 3963032), (8, 2476895), (10, 1981516), (20, 990758), (40, 495379), (97, 204280), (194, 102140), (388, 51070), (485, 40856), (776, 25535), (970, 20428), (1940, 10214), (3880, 5107)]