4078720

素因数分解:

$2^7\times 5^1\times {\mathrm{6373}}^1$

素因数の和:6392

約数の個数: 32

約数和(自身を含む): 9752220

約数和(自身を除く): 5673500

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 6373, 12746, 25492, 31865, 50984, 63730, 101968, 127460, 203936, 254920, 407872, 509840, 815744, 1019680, 2039360, 4078720]

約数ペア:

[(1, 4078720), (2, 2039360), (4, 1019680), (5, 815744), (8, 509840), (10, 407872), (16, 254920), (20, 203936), (32, 127460), (40, 101968), (64, 63730), (80, 50984), (128, 31865), (160, 25492), (320, 12746), (640, 6373)]