20219440

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^2\times {\mathrm{263}}^1$

素因数の和:338

約数の個数: 60

約数和(自身を含む): 48760272

約数和(自身を除く): 28540832

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 263, 310, 496, 526, 620, 961, 1052, 1240, 1315, 1922, 2104, 2480, 2630, 3844, 4208, 4805, 5260, 7688, 8153, 9610, 10520, 15376, 16306, 19220, 21040, 32612, 38440, 40765, 65224, 76880, 81530, 130448, 163060, 252743, 326120, 505486, 652240, 1010972, 1263715, 2021944, 2527430, 4043888, 5054860, 10109720, 20219440]

約数ペア:

[(1, 20219440), (2, 10109720), (4, 5054860), (5, 4043888), (8, 2527430), (10, 2021944), (16, 1263715), (20, 1010972), (31, 652240), (40, 505486), (62, 326120), (80, 252743), (124, 163060), (155, 130448), (248, 81530), (263, 76880), (310, 65224), (496, 40765), (526, 38440), (620, 32612), (961, 21040), (1052, 19220), (1240, 16306), (1315, 15376), (1922, 10520), (2104, 9610), (2480, 8153), (2630, 7688), (3844, 5260), (4208, 4805)]