397745925

素因数分解:

$3^1\times 5^2\times {\mathrm{61}}^1\times {\mathrm{86939}}^1$

素因数の和:87013

約数の個数: 24

約数和(自身を含む): 668394720

約数和(自身を除く): 270648795

約数列:

[1, 3, 5, 15, 25, 61, 75, 183, 305, 915, 1525, 4575, 86939, 260817, 434695, 1304085, 2173475, 5303279, 6520425, 15909837, 26516395, 79549185, 132581975, 397745925]

約数ペア:

[(1, 397745925), (3, 132581975), (5, 79549185), (15, 26516395), (25, 15909837), (61, 6520425), (75, 5303279), (183, 2173475), (305, 1304085), (915, 434695), (1525, 260817), (4575, 86939)]