21708512

素因数分解:

$2^5\times 7^1\times {\mathrm{199}}^1\times {\mathrm{487}}^1$

素因数の和:703

約数の個数: 48

約数和(自身を含む): 49190400

約数和(自身を除く): 27481888

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 112, 199, 224, 398, 487, 796, 974, 1393, 1592, 1948, 2786, 3184, 3409, 3896, 5572, 6368, 6818, 7792, 11144, 13636, 15584, 22288, 27272, 44576, 54544, 96913, 109088, 193826, 387652, 678391, 775304, 1356782, 1550608, 2713564, 3101216, 5427128, 10854256, 21708512]

約数ペア:

[(1, 21708512), (2, 10854256), (4, 5427128), (7, 3101216), (8, 2713564), (14, 1550608), (16, 1356782), (28, 775304), (32, 678391), (56, 387652), (112, 193826), (199, 109088), (224, 96913), (398, 54544), (487, 44576), (796, 27272), (974, 22288), (1393, 15584), (1592, 13636), (1948, 11144), (2786, 7792), (3184, 6818), (3409, 6368), (3896, 5572)]