20656564

素因数分解:

$2^2\times {\mathrm{17}}^2\times {\mathrm{107}}^1\times {\mathrm{167}}^1$

素因数の和:312

約数の個数: 36

約数和(自身を含む): 38991456

約数和(自身を除く): 18334892

約数列:

[1, 2, 4, 17, 34, 68, 107, 167, 214, 289, 334, 428, 578, 668, 1156, 1819, 2839, 3638, 5678, 7276, 11356, 17869, 30923, 35738, 48263, 61846, 71476, 96526, 123692, 193052, 303773, 607546, 1215092, 5164141, 10328282, 20656564]

約数ペア:

[(1, 20656564), (2, 10328282), (4, 5164141), (17, 1215092), (34, 607546), (68, 303773), (107, 193052), (167, 123692), (214, 96526), (289, 71476), (334, 61846), (428, 48263), (578, 35738), (668, 30923), (1156, 17869), (1819, 11356), (2839, 7276), (3638, 5678)]