278315985

素因数分解:

$3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{491}}^1$

素因数の和:606

約数の個数: 64

約数和(自身を含む): 489701376

約数和(自身を除く): 211385391

約数列:

[1, 3, 5, 15, 23, 31, 53, 69, 93, 115, 155, 159, 265, 345, 465, 491, 713, 795, 1219, 1473, 1643, 2139, 2455, 3565, 3657, 4929, 6095, 7365, 8215, 10695, 11293, 15221, 18285, 24645, 26023, 33879, 37789, 45663, 56465, 76105, 78069, 113367, 130115, 169395, 188945, 228315, 350083, 390345, 566835, 598529, 806713, 1050249, 1750415, 1795587, 2420139, 2992645, 4033565, 5251245, 8977935, 12100695, 18554399, 55663197, 92771995, 278315985]

約数ペア:

[(1, 278315985), (3, 92771995), (5, 55663197), (15, 18554399), (23, 12100695), (31, 8977935), (53, 5251245), (69, 4033565), (93, 2992645), (115, 2420139), (155, 1795587), (159, 1750415), (265, 1050249), (345, 806713), (465, 598529), (491, 566835), (713, 390345), (795, 350083), (1219, 228315), (1473, 188945), (1643, 169395), (2139, 130115), (2455, 113367), (3565, 78069), (3657, 76105), (4929, 56465), (6095, 45663), (7365, 37789), (8215, 33879), (10695, 26023), (11293, 24645), (15221, 18285)]