4942720

素因数分解:

$2^7\times 5^1\times {\mathrm{7723}}^1$

素因数の和:7742

約数の個数: 32

約数和(自身を含む): 11817720

約数和(自身を除く): 6875000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 7723, 15446, 30892, 38615, 61784, 77230, 123568, 154460, 247136, 308920, 494272, 617840, 988544, 1235680, 2471360, 4942720]

約数ペア:

[(1, 4942720), (2, 2471360), (4, 1235680), (5, 988544), (8, 617840), (10, 494272), (16, 308920), (20, 247136), (32, 154460), (40, 123568), (64, 77230), (80, 61784), (128, 38615), (160, 30892), (320, 15446), (640, 7723)]