28663720

素因数分解:

$2^3\times 5^1\times {\mathrm{383}}^1\times {\mathrm{1871}}^1$

素因数の和:2265

約数の個数: 32

約数和(自身を含む): 64696320

約数和(自身を除く): 36032600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 383, 766, 1532, 1871, 1915, 3064, 3742, 3830, 7484, 7660, 9355, 14968, 15320, 18710, 37420, 74840, 716593, 1433186, 2866372, 3582965, 5732744, 7165930, 14331860, 28663720]

約数ペア:

[(1, 28663720), (2, 14331860), (4, 7165930), (5, 5732744), (8, 3582965), (10, 2866372), (20, 1433186), (40, 716593), (383, 74840), (766, 37420), (1532, 18710), (1871, 15320), (1915, 14968), (3064, 9355), (3742, 7660), (3830, 7484)]