21173943

素因数分解:

$3^1\times 7^1\times {\mathrm{67}}^1\times {\mathrm{101}}^1\times {\mathrm{149}}^1$

素因数の和:327

約数の個数: 32

約数和(自身を含む): 33292800

約数和(自身を除く): 12118857

約数列:

[1, 3, 7, 21, 67, 101, 149, 201, 303, 447, 469, 707, 1043, 1407, 2121, 3129, 6767, 9983, 15049, 20301, 29949, 45147, 47369, 69881, 105343, 142107, 209643, 316029, 1008283, 3024849, 7057981, 21173943]

約数ペア:

[(1, 21173943), (3, 7057981), (7, 3024849), (21, 1008283), (67, 316029), (101, 209643), (149, 142107), (201, 105343), (303, 69881), (447, 47369), (469, 45147), (707, 29949), (1043, 20301), (1407, 15049), (2121, 9983), (3129, 6767)]