211231720

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{754399}}^1$

素因数の和:754417

約数の個数: 32

約数和(自身を含む): 543168000

約数和(自身を除く): 331936280

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 754399, 1508798, 3017596, 3771995, 5280793, 6035192, 7543990, 10561586, 15087980, 21123172, 26403965, 30175960, 42246344, 52807930, 105615860, 211231720]

約数ペア:

[(1, 211231720), (2, 105615860), (4, 52807930), (5, 42246344), (7, 30175960), (8, 26403965), (10, 21123172), (14, 15087980), (20, 10561586), (28, 7543990), (35, 6035192), (40, 5280793), (56, 3771995), (70, 3017596), (140, 1508798), (280, 754399)]