21641508

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{157}}^1\times {\mathrm{547}}^1$

素因数の和:721

約数の個数: 72

約数和(自身を含む): 63033152

約数和(自身を除く): 41391644

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 84, 126, 157, 252, 314, 471, 547, 628, 942, 1094, 1099, 1413, 1641, 1884, 2188, 2198, 2826, 3282, 3297, 3829, 4396, 4923, 5652, 6564, 6594, 7658, 9846, 9891, 11487, 13188, 15316, 19692, 19782, 22974, 34461, 39564, 45948, 68922, 85879, 137844, 171758, 257637, 343516, 515274, 601153, 772911, 1030548, 1202306, 1545822, 1803459, 2404612, 3091644, 3606918, 5410377, 7213836, 10820754, 21641508]

約数ペア:

[(1, 21641508), (2, 10820754), (3, 7213836), (4, 5410377), (6, 3606918), (7, 3091644), (9, 2404612), (12, 1803459), (14, 1545822), (18, 1202306), (21, 1030548), (28, 772911), (36, 601153), (42, 515274), (63, 343516), (84, 257637), (126, 171758), (157, 137844), (252, 85879), (314, 68922), (471, 45948), (547, 39564), (628, 34461), (942, 22974), (1094, 19782), (1099, 19692), (1413, 15316), (1641, 13188), (1884, 11487), (2188, 9891), (2198, 9846), (2826, 7658), (3282, 6594), (3297, 6564), (3829, 5652), (4396, 4923)]