20153968

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{179}}^1\times {\mathrm{227}}^1$

素因数の和:445

約数の個数: 40

約数和(自身を含む): 40711680

約数和(自身を除く): 20557712

約数列:

[1, 2, 4, 8, 16, 31, 62, 124, 179, 227, 248, 358, 454, 496, 716, 908, 1432, 1816, 2864, 3632, 5549, 7037, 11098, 14074, 22196, 28148, 40633, 44392, 56296, 81266, 88784, 112592, 162532, 325064, 650128, 1259623, 2519246, 5038492, 10076984, 20153968]

約数ペア:

[(1, 20153968), (2, 10076984), (4, 5038492), (8, 2519246), (16, 1259623), (31, 650128), (62, 325064), (124, 162532), (179, 112592), (227, 88784), (248, 81266), (358, 56296), (454, 44392), (496, 40633), (716, 28148), (908, 22196), (1432, 14074), (1816, 11098), (2864, 7037), (3632, 5549)]