20805819

素因数分解:

$3^1\times {\mathrm{41}}^1\times {\mathrm{47}}^1\times {\mathrm{59}}^1\times {\mathrm{61}}^1$

素因数の和:211

約数の個数: 32

約数和(自身を含む): 29998080

約数和(自身を除く): 9192261

約数列:

[1, 3, 41, 47, 59, 61, 123, 141, 177, 183, 1927, 2419, 2501, 2773, 2867, 3599, 5781, 7257, 7503, 8319, 8601, 10797, 113693, 117547, 147559, 169153, 341079, 352641, 442677, 507459, 6935273, 20805819]

約数ペア:

[(1, 20805819), (3, 6935273), (41, 507459), (47, 442677), (59, 352641), (61, 341079), (123, 169153), (141, 147559), (177, 117547), (183, 113693), (1927, 10797), (2419, 8601), (2501, 8319), (2773, 7503), (2867, 7257), (3599, 5781)]