21677440

素因数分解:

$2^7\times 5^1\times {\mathrm{33871}}^1$

素因数の和:33890

約数の個数: 32

約数和(自身を含む): 51824160

約数和(自身を除く): 30146720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 33871, 67742, 135484, 169355, 270968, 338710, 541936, 677420, 1083872, 1354840, 2167744, 2709680, 4335488, 5419360, 10838720, 21677440]

約数ペア:

[(1, 21677440), (2, 10838720), (4, 5419360), (5, 4335488), (8, 2709680), (10, 2167744), (16, 1354840), (20, 1083872), (32, 677420), (40, 541936), (64, 338710), (80, 270968), (128, 169355), (160, 135484), (320, 67742), (640, 33871)]