257642775

素因数分解:

$3^4\times 5^2\times {\mathrm{13}}^1\times {\mathrm{9787}}^1$

素因数の和:9822

約数の個数: 60

約数和(自身を含む): 514007032

約数和(自身を除く): 256364257

約数列:

[1, 3, 5, 9, 13, 15, 25, 27, 39, 45, 65, 75, 81, 117, 135, 195, 225, 325, 351, 405, 585, 675, 975, 1053, 1755, 2025, 2925, 5265, 8775, 9787, 26325, 29361, 48935, 88083, 127231, 146805, 244675, 264249, 381693, 440415, 636155, 734025, 792747, 1145079, 1321245, 1908465, 2202075, 3180775, 3435237, 3963735, 5725395, 6606225, 9542325, 10305711, 17176185, 19818675, 28626975, 51528555, 85880925, 257642775]

約数ペア:

[(1, 257642775), (3, 85880925), (5, 51528555), (9, 28626975), (13, 19818675), (15, 17176185), (25, 10305711), (27, 9542325), (39, 6606225), (45, 5725395), (65, 3963735), (75, 3435237), (81, 3180775), (117, 2202075), (135, 1908465), (195, 1321245), (225, 1145079), (325, 792747), (351, 734025), (405, 636155), (585, 440415), (675, 381693), (975, 264249), (1053, 244675), (1755, 146805), (2025, 127231), (2925, 88083), (5265, 48935), (8775, 29361), (9787, 26325)]