201871815

素因数分解:

$3^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{71}}^1\times {\mathrm{109}}^1$

素因数の和:272

約数の個数: 64

約数和(自身を含む): 346705920

約数和(自身を除く): 144834105

約数列:

[1, 3, 5, 15, 37, 47, 71, 109, 111, 141, 185, 213, 235, 327, 355, 545, 555, 705, 1065, 1635, 1739, 2627, 3337, 4033, 5123, 5217, 7739, 7881, 8695, 10011, 12099, 13135, 15369, 16685, 20165, 23217, 25615, 26085, 38695, 39405, 50055, 60495, 76845, 116085, 123469, 189551, 286343, 363733, 370407, 568653, 617345, 859029, 947755, 1091199, 1431715, 1818665, 1852035, 2843265, 4295145, 5455995, 13458121, 40374363, 67290605, 201871815]

約数ペア:

[(1, 201871815), (3, 67290605), (5, 40374363), (15, 13458121), (37, 5455995), (47, 4295145), (71, 2843265), (109, 1852035), (111, 1818665), (141, 1431715), (185, 1091199), (213, 947755), (235, 859029), (327, 617345), (355, 568653), (545, 370407), (555, 363733), (705, 286343), (1065, 189551), (1635, 123469), (1739, 116085), (2627, 76845), (3337, 60495), (4033, 50055), (5123, 39405), (5217, 38695), (7739, 26085), (7881, 25615), (8695, 23217), (10011, 20165), (12099, 16685), (13135, 15369)]