20756918

素因数分解:

$2^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{283}}^1$

素因数の和:349

約数の個数: 48

約数和(自身を含む): 39914496

約数和(自身を除く): 19157578

約数列:

[1, 2, 7, 13, 14, 26, 31, 62, 91, 169, 182, 217, 283, 338, 403, 434, 566, 806, 1183, 1981, 2366, 2821, 3679, 3962, 5239, 5642, 7358, 8773, 10478, 17546, 25753, 36673, 47827, 51506, 61411, 73346, 95654, 114049, 122822, 228098, 334789, 669578, 798343, 1482637, 1596686, 2965274, 10378459, 20756918]

約数ペア:

[(1, 20756918), (2, 10378459), (7, 2965274), (13, 1596686), (14, 1482637), (26, 798343), (31, 669578), (62, 334789), (91, 228098), (169, 122822), (182, 114049), (217, 95654), (283, 73346), (338, 61411), (403, 51506), (434, 47827), (566, 36673), (806, 25753), (1183, 17546), (1981, 10478), (2366, 8773), (2821, 7358), (3679, 5642), (3962, 5239)]