18687872

素因数分解:

$2^7\times 7^1\times {\mathrm{20857}}^1$

素因数の和:20878

約数の個数: 32

約数和(自身を含む): 42550320

約数和(自身を除く): 23862448

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 64, 112, 128, 224, 448, 896, 20857, 41714, 83428, 145999, 166856, 291998, 333712, 583996, 667424, 1167992, 1334848, 2335984, 2669696, 4671968, 9343936, 18687872]

約数ペア:

[(1, 18687872), (2, 9343936), (4, 4671968), (7, 2669696), (8, 2335984), (14, 1334848), (16, 1167992), (28, 667424), (32, 583996), (56, 333712), (64, 291998), (112, 166856), (128, 145999), (224, 83428), (448, 41714), (896, 20857)]