21989730

素因数分解:

$2^1\times 3^1\times 5^1\times 7^3\times {\mathrm{2137}}^1$

素因数の和:2168

約数の個数: 64

約数和(自身を含む): 61574400

約数和(自身を除く): 39584670

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 49, 70, 98, 105, 147, 210, 245, 294, 343, 490, 686, 735, 1029, 1470, 1715, 2058, 2137, 3430, 4274, 5145, 6411, 10290, 10685, 12822, 14959, 21370, 29918, 32055, 44877, 64110, 74795, 89754, 104713, 149590, 209426, 224385, 314139, 448770, 523565, 628278, 732991, 1047130, 1465982, 1570695, 2198973, 3141390, 3664955, 4397946, 7329910, 10994865, 21989730]

約数ペア:

[(1, 21989730), (2, 10994865), (3, 7329910), (5, 4397946), (6, 3664955), (7, 3141390), (10, 2198973), (14, 1570695), (15, 1465982), (21, 1047130), (30, 732991), (35, 628278), (42, 523565), (49, 448770), (70, 314139), (98, 224385), (105, 209426), (147, 149590), (210, 104713), (245, 89754), (294, 74795), (343, 64110), (490, 44877), (686, 32055), (735, 29918), (1029, 21370), (1470, 14959), (1715, 12822), (2058, 10685), (2137, 10290), (3430, 6411), (4274, 5145)]