21990108

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{261787}}^1$

素因数の和:261801

約数の個数: 24

約数和(自身を含む): 58640512

約数和(自身を除く): 36650404

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84, 261787, 523574, 785361, 1047148, 1570722, 1832509, 3141444, 3665018, 5497527, 7330036, 10995054, 21990108]

約数ペア:

[(1, 21990108), (2, 10995054), (3, 7330036), (4, 5497527), (6, 3665018), (7, 3141444), (12, 1832509), (14, 1570722), (21, 1047148), (28, 785361), (42, 523574), (84, 261787)]