19145860

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{97}}^1\times {\mathrm{139}}^1$

素因数の和:316

約数の個数: 48

約数和(自身を含む): 41489280

約数和(自身を除く): 22343420

約数列:

[1, 2, 4, 5, 10, 20, 71, 97, 139, 142, 194, 278, 284, 355, 388, 485, 556, 695, 710, 970, 1390, 1420, 1940, 2780, 6887, 9869, 13483, 13774, 19738, 26966, 27548, 34435, 39476, 49345, 53932, 67415, 68870, 98690, 134830, 137740, 197380, 269660, 957293, 1914586, 3829172, 4786465, 9572930, 19145860]

約数ペア:

[(1, 19145860), (2, 9572930), (4, 4786465), (5, 3829172), (10, 1914586), (20, 957293), (71, 269660), (97, 197380), (139, 137740), (142, 134830), (194, 98690), (278, 68870), (284, 67415), (355, 53932), (388, 49345), (485, 39476), (556, 34435), (695, 27548), (710, 26966), (970, 19738), (1390, 13774), (1420, 13483), (1940, 9869), (2780, 6887)]