20669894

素因数分解:

$2^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{89}}^1\times {\mathrm{313}}^1$

素因数の和:464

約数の個数: 32

約数和(自身を含む): 36624960

約数和(自身を除く): 15955066

約数列:

[1, 2, 7, 14, 53, 89, 106, 178, 313, 371, 623, 626, 742, 1246, 2191, 4382, 4717, 9434, 16589, 27857, 33019, 33178, 55714, 66038, 116123, 194999, 232246, 389998, 1476421, 2952842, 10334947, 20669894]

約数ペア:

[(1, 20669894), (2, 10334947), (7, 2952842), (14, 1476421), (53, 389998), (89, 232246), (106, 194999), (178, 116123), (313, 66038), (371, 55714), (623, 33178), (626, 33019), (742, 27857), (1246, 16589), (2191, 9434), (4382, 4717)]