20817768

素因数分解:

$2^3\times 3^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{643}}^1$

素因数の和:742

約数の個数: 64

約数和(自身を含む): 55641600

約数和(自身を除く): 34823832

約数列:

[1, 2, 3, 4, 6, 8, 12, 19, 24, 38, 57, 71, 76, 114, 142, 152, 213, 228, 284, 426, 456, 568, 643, 852, 1286, 1349, 1704, 1929, 2572, 2698, 3858, 4047, 5144, 5396, 7716, 8094, 10792, 12217, 15432, 16188, 24434, 32376, 36651, 45653, 48868, 73302, 91306, 97736, 136959, 146604, 182612, 273918, 293208, 365224, 547836, 867407, 1095672, 1734814, 2602221, 3469628, 5204442, 6939256, 10408884, 20817768]

約数ペア:

[(1, 20817768), (2, 10408884), (3, 6939256), (4, 5204442), (6, 3469628), (8, 2602221), (12, 1734814), (19, 1095672), (24, 867407), (38, 547836), (57, 365224), (71, 293208), (76, 273918), (114, 182612), (142, 146604), (152, 136959), (213, 97736), (228, 91306), (284, 73302), (426, 48868), (456, 45653), (568, 36651), (643, 32376), (852, 24434), (1286, 16188), (1349, 15432), (1704, 12217), (1929, 10792), (2572, 8094), (2698, 7716), (3858, 5396), (4047, 5144)]