19626980

素因数分解:

$2^2\times 5^1\times {\mathrm{67}}^1\times {\mathrm{97}}^1\times {\mathrm{151}}^1$

素因数の和:324

約数の個数: 48

約数和(自身を含む): 42542976

約数和(自身を除く): 22915996

約数列:

[1, 2, 4, 5, 10, 20, 67, 97, 134, 151, 194, 268, 302, 335, 388, 485, 604, 670, 755, 970, 1340, 1510, 1940, 3020, 6499, 10117, 12998, 14647, 20234, 25996, 29294, 32495, 40468, 50585, 58588, 64990, 73235, 101170, 129980, 146470, 202340, 292940, 981349, 1962698, 3925396, 4906745, 9813490, 19626980]

約数ペア:

[(1, 19626980), (2, 9813490), (4, 4906745), (5, 3925396), (10, 1962698), (20, 981349), (67, 292940), (97, 202340), (134, 146470), (151, 129980), (194, 101170), (268, 73235), (302, 64990), (335, 58588), (388, 50585), (485, 40468), (604, 32495), (670, 29294), (755, 25996), (970, 20234), (1340, 14647), (1510, 12998), (1940, 10117), (3020, 6499)]