21450828

素因数分解:

$2^2\times 3^1\times 7^2\times {\mathrm{191}}^2$

素因数の和:403

約数の個数: 54

約数和(自身を含む): 58530108

約数和(自身を除く): 37079280

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 49, 84, 98, 147, 191, 196, 294, 382, 573, 588, 764, 1146, 1337, 2292, 2674, 4011, 5348, 8022, 9359, 16044, 18718, 28077, 36481, 37436, 56154, 72962, 109443, 112308, 145924, 218886, 255367, 437772, 510734, 766101, 1021468, 1532202, 1787569, 3064404, 3575138, 5362707, 7150276, 10725414, 21450828]

約数ペア:

[(1, 21450828), (2, 10725414), (3, 7150276), (4, 5362707), (6, 3575138), (7, 3064404), (12, 1787569), (14, 1532202), (21, 1021468), (28, 766101), (42, 510734), (49, 437772), (84, 255367), (98, 218886), (147, 145924), (191, 112308), (196, 109443), (294, 72962), (382, 56154), (573, 37436), (588, 36481), (764, 28077), (1146, 18718), (1337, 16044), (2292, 9359), (2674, 8022), (4011, 5348)]