72445420

素因数分解:

$2^2\times 5^1\times {\mathrm{97}}^1\times {\mathrm{107}}^1\times {\mathrm{349}}^1$

素因数の和:562

約数の個数: 48

約数和(自身を含む): 155584800

約数和(自身を除く): 83139380

約数列:

[1, 2, 4, 5, 10, 20, 97, 107, 194, 214, 349, 388, 428, 485, 535, 698, 970, 1070, 1396, 1745, 1940, 2140, 3490, 6980, 10379, 20758, 33853, 37343, 41516, 51895, 67706, 74686, 103790, 135412, 149372, 169265, 186715, 207580, 338530, 373430, 677060, 746860, 3622271, 7244542, 14489084, 18111355, 36222710, 72445420]

約数ペア:

[(1, 72445420), (2, 36222710), (4, 18111355), (5, 14489084), (10, 7244542), (20, 3622271), (97, 746860), (107, 677060), (194, 373430), (214, 338530), (349, 207580), (388, 186715), (428, 169265), (485, 149372), (535, 135412), (698, 103790), (970, 74686), (1070, 67706), (1396, 51895), (1745, 41516), (1940, 37343), (2140, 33853), (3490, 20758), (6980, 10379)]