20713401

素因数分解:

$3^4\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{313}}^1$

素因数の和:387

約数の個数: 40

約数和(自身を含む): 33434720

約数和(自身を除く): 12721319

約数列:

[1, 3, 9, 19, 27, 43, 57, 81, 129, 171, 313, 387, 513, 817, 939, 1161, 1539, 2451, 2817, 3483, 5947, 7353, 8451, 13459, 17841, 22059, 25353, 40377, 53523, 66177, 121131, 160569, 255721, 363393, 481707, 767163, 1090179, 2301489, 6904467, 20713401]

約数ペア:

[(1, 20713401), (3, 6904467), (9, 2301489), (19, 1090179), (27, 767163), (43, 481707), (57, 363393), (81, 255721), (129, 160569), (171, 121131), (313, 66177), (387, 53523), (513, 40377), (817, 25353), (939, 22059), (1161, 17841), (1539, 13459), (2451, 8451), (2817, 7353), (3483, 5947)]