18901755

素因数分解:

$3^5\times 5^1\times {\mathrm{47}}^1\times {\mathrm{331}}^1$

素因数の和:398

約数の個数: 48

約数和(自身を含む): 34804224

約数和(自身を除く): 15902469

約数列:

[1, 3, 5, 9, 15, 27, 45, 47, 81, 135, 141, 235, 243, 331, 405, 423, 705, 993, 1215, 1269, 1655, 2115, 2979, 3807, 4965, 6345, 8937, 11421, 14895, 15557, 19035, 26811, 44685, 46671, 57105, 77785, 80433, 134055, 140013, 233355, 402165, 420039, 700065, 1260117, 2100195, 3780351, 6300585, 18901755]

約数ペア:

[(1, 18901755), (3, 6300585), (5, 3780351), (9, 2100195), (15, 1260117), (27, 700065), (45, 420039), (47, 402165), (81, 233355), (135, 140013), (141, 134055), (235, 80433), (243, 77785), (331, 57105), (405, 46671), (423, 44685), (705, 26811), (993, 19035), (1215, 15557), (1269, 14895), (1655, 11421), (2115, 8937), (2979, 6345), (3807, 4965)]