20489130

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{251}}^1\times {\mathrm{907}}^1$

素因数の和:1171

約数の個数: 48

約数和(自身を含む): 53542944

約数和(自身を除く): 33053814

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 251, 502, 753, 907, 1255, 1506, 1814, 2259, 2510, 2721, 3765, 4518, 4535, 5442, 7530, 8163, 9070, 11295, 13605, 16326, 22590, 27210, 40815, 81630, 227657, 455314, 682971, 1138285, 1365942, 2048913, 2276570, 3414855, 4097826, 6829710, 10244565, 20489130]

約数ペア:

[(1, 20489130), (2, 10244565), (3, 6829710), (5, 4097826), (6, 3414855), (9, 2276570), (10, 2048913), (15, 1365942), (18, 1138285), (30, 682971), (45, 455314), (90, 227657), (251, 81630), (502, 40815), (753, 27210), (907, 22590), (1255, 16326), (1506, 13605), (1814, 11295), (2259, 9070), (2510, 8163), (2721, 7530), (3765, 5442), (4518, 4535)]