20969685

素因数分解:

$3^6\times 5^1\times {\mathrm{11}}^1\times {\mathrm{523}}^1$

素因数の和:557

約数の個数: 56

約数和(自身を含む): 41236704

約数和(自身を除く): 20267019

約数列:

[1, 3, 5, 9, 11, 15, 27, 33, 45, 55, 81, 99, 135, 165, 243, 297, 405, 495, 523, 729, 891, 1215, 1485, 1569, 2615, 2673, 3645, 4455, 4707, 5753, 7845, 8019, 13365, 14121, 17259, 23535, 28765, 40095, 42363, 51777, 70605, 86295, 127089, 155331, 211815, 258885, 381267, 465993, 635445, 776655, 1397979, 1906335, 2329965, 4193937, 6989895, 20969685]

約数ペア:

[(1, 20969685), (3, 6989895), (5, 4193937), (9, 2329965), (11, 1906335), (15, 1397979), (27, 776655), (33, 635445), (45, 465993), (55, 381267), (81, 258885), (99, 211815), (135, 155331), (165, 127089), (243, 86295), (297, 70605), (405, 51777), (495, 42363), (523, 40095), (729, 28765), (891, 23535), (1215, 17259), (1485, 14121), (1569, 13365), (2615, 8019), (2673, 7845), (3645, 5753), (4455, 4707)]