257536251

素因数分解:

$3^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{163}}^1\times {\mathrm{809}}^1$

素因数の和:1016

約数の個数: 48

約数和(自身を含む): 442091520

約数和(自身を除く): 184555269

約数列:

[1, 3, 7, 9, 21, 31, 63, 93, 163, 217, 279, 489, 651, 809, 1141, 1467, 1953, 2427, 3423, 5053, 5663, 7281, 10269, 15159, 16989, 25079, 35371, 45477, 50967, 75237, 106113, 131867, 175553, 225711, 318339, 395601, 526659, 923069, 1186803, 1579977, 2769207, 4087877, 8307621, 12263631, 28615139, 36790893, 85845417, 257536251]

約数ペア:

[(1, 257536251), (3, 85845417), (7, 36790893), (9, 28615139), (21, 12263631), (31, 8307621), (63, 4087877), (93, 2769207), (163, 1579977), (217, 1186803), (279, 923069), (489, 526659), (651, 395601), (809, 318339), (1141, 225711), (1467, 175553), (1953, 131867), (2427, 106113), (3423, 75237), (5053, 50967), (5663, 45477), (7281, 35371), (10269, 25079), (15159, 16989)]