19675845

素因数分解:

$3^3\times 5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{443}}^1$

素因数の和:511

約数の個数: 64

約数和(自身を含む): 40919040

約数和(自身を除く): 21243195

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 47, 63, 105, 135, 141, 189, 235, 315, 329, 423, 443, 705, 945, 987, 1269, 1329, 1645, 2115, 2215, 2961, 3101, 3987, 4935, 6345, 6645, 8883, 9303, 11961, 14805, 15505, 19935, 20821, 27909, 44415, 46515, 59805, 62463, 83727, 104105, 139545, 145747, 187389, 312315, 418635, 437241, 562167, 728735, 936945, 1311723, 2186205, 2810835, 3935169, 6558615, 19675845]

約数ペア:

[(1, 19675845), (3, 6558615), (5, 3935169), (7, 2810835), (9, 2186205), (15, 1311723), (21, 936945), (27, 728735), (35, 562167), (45, 437241), (47, 418635), (63, 312315), (105, 187389), (135, 145747), (141, 139545), (189, 104105), (235, 83727), (315, 62463), (329, 59805), (423, 46515), (443, 44415), (705, 27909), (945, 20821), (987, 19935), (1269, 15505), (1329, 14805), (1645, 11961), (2115, 9303), (2215, 8883), (2961, 6645), (3101, 6345), (3987, 4935)]