65431720

素因数分解:

$2^3\times 5^1\times {\mathrm{383}}^1\times {\mathrm{4271}}^1$

素因数の和:4665

約数の個数: 32

約数和(自身を含む): 147640320

約数和(自身を除く): 82208600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 383, 766, 1532, 1915, 3064, 3830, 4271, 7660, 8542, 15320, 17084, 21355, 34168, 42710, 85420, 170840, 1635793, 3271586, 6543172, 8178965, 13086344, 16357930, 32715860, 65431720]

約数ペア:

[(1, 65431720), (2, 32715860), (4, 16357930), (5, 13086344), (8, 8178965), (10, 6543172), (20, 3271586), (40, 1635793), (383, 170840), (766, 85420), (1532, 42710), (1915, 34168), (3064, 21355), (3830, 17084), (4271, 15320), (7660, 8542)]