19903590

素因数分解:

$2^1\times 3^3\times 5^1\times 7^1\times {\mathrm{10531}}^1$

素因数の和:10554

約数の個数: 64

約数和(自身を含む): 60664320

約数和(自身を除く): 40760730

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 27, 30, 35, 42, 45, 54, 63, 70, 90, 105, 126, 135, 189, 210, 270, 315, 378, 630, 945, 1890, 10531, 21062, 31593, 52655, 63186, 73717, 94779, 105310, 147434, 157965, 189558, 221151, 284337, 315930, 368585, 442302, 473895, 568674, 663453, 737170, 947790, 1105755, 1326906, 1421685, 1990359, 2211510, 2843370, 3317265, 3980718, 6634530, 9951795, 19903590]

約数ペア:

[(1, 19903590), (2, 9951795), (3, 6634530), (5, 3980718), (6, 3317265), (7, 2843370), (9, 2211510), (10, 1990359), (14, 1421685), (15, 1326906), (18, 1105755), (21, 947790), (27, 737170), (30, 663453), (35, 568674), (42, 473895), (45, 442302), (54, 368585), (63, 315930), (70, 284337), (90, 221151), (105, 189558), (126, 157965), (135, 147434), (189, 105310), (210, 94779), (270, 73717), (315, 63186), (378, 52655), (630, 31593), (945, 21062), (1890, 10531)]