20588540

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{199}}^1\times {\mathrm{739}}^1$

素因数の和:954

約数の個数: 48

約数和(自身を含む): 49728000

約数和(自身を除く): 29139460

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 199, 398, 739, 796, 995, 1393, 1478, 1990, 2786, 2956, 3695, 3980, 5173, 5572, 6965, 7390, 10346, 13930, 14780, 20692, 25865, 27860, 51730, 103460, 147061, 294122, 588244, 735305, 1029427, 1470610, 2058854, 2941220, 4117708, 5147135, 10294270, 20588540]

約数ペア:

[(1, 20588540), (2, 10294270), (4, 5147135), (5, 4117708), (7, 2941220), (10, 2058854), (14, 1470610), (20, 1029427), (28, 735305), (35, 588244), (70, 294122), (140, 147061), (199, 103460), (398, 51730), (739, 27860), (796, 25865), (995, 20692), (1393, 14780), (1478, 13930), (1990, 10346), (2786, 7390), (2956, 6965), (3695, 5572), (3980, 5173)]