21746720

素因数分解:

$2^5\times 5^1\times {\mathrm{199}}^1\times {\mathrm{683}}^1$

素因数の和:897

約数の個数: 48

約数和(自身を含む): 51710400

約数和(自身を除く): 29963680

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 199, 398, 683, 796, 995, 1366, 1592, 1990, 2732, 3184, 3415, 3980, 5464, 6368, 6830, 7960, 10928, 13660, 15920, 21856, 27320, 31840, 54640, 109280, 135917, 271834, 543668, 679585, 1087336, 1359170, 2174672, 2718340, 4349344, 5436680, 10873360, 21746720]

約数ペア:

[(1, 21746720), (2, 10873360), (4, 5436680), (5, 4349344), (8, 2718340), (10, 2174672), (16, 1359170), (20, 1087336), (32, 679585), (40, 543668), (80, 271834), (160, 135917), (199, 109280), (398, 54640), (683, 31840), (796, 27320), (995, 21856), (1366, 15920), (1592, 13660), (1990, 10928), (2732, 7960), (3184, 6830), (3415, 6368), (3980, 5464)]