20726265

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{163}}^1\times {\mathrm{173}}^1$

素因数の和:358

約数の個数: 48

約数和(自身を含む): 39037248

約数和(自身を除く): 18310983

約数列:

[1, 3, 5, 7, 15, 21, 35, 49, 105, 147, 163, 173, 245, 489, 519, 735, 815, 865, 1141, 1211, 2445, 2595, 3423, 3633, 5705, 6055, 7987, 8477, 17115, 18165, 23961, 25431, 28199, 39935, 42385, 84597, 119805, 127155, 140995, 197393, 422985, 592179, 986965, 1381751, 2960895, 4145253, 6908755, 20726265]

約数ペア:

[(1, 20726265), (3, 6908755), (5, 4145253), (7, 2960895), (15, 1381751), (21, 986965), (35, 592179), (49, 422985), (105, 197393), (147, 140995), (163, 127155), (173, 119805), (245, 84597), (489, 42385), (519, 39935), (735, 28199), (815, 25431), (865, 23961), (1141, 18165), (1211, 17115), (2445, 8477), (2595, 7987), (3423, 6055), (3633, 5705)]