21639828

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{3529}}^1$

素因数の和:3616

約数の個数: 48

約数和(自身を含む): 58513280

約数和(自身を除く): 36873452

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 73, 84, 146, 219, 292, 438, 511, 876, 1022, 1533, 2044, 3066, 3529, 6132, 7058, 10587, 14116, 21174, 24703, 42348, 49406, 74109, 98812, 148218, 257617, 296436, 515234, 772851, 1030468, 1545702, 1803319, 3091404, 3606638, 5409957, 7213276, 10819914, 21639828]

約数ペア:

[(1, 21639828), (2, 10819914), (3, 7213276), (4, 5409957), (6, 3606638), (7, 3091404), (12, 1803319), (14, 1545702), (21, 1030468), (28, 772851), (42, 515234), (73, 296436), (84, 257617), (146, 148218), (219, 98812), (292, 74109), (438, 49406), (511, 42348), (876, 24703), (1022, 21174), (1533, 14116), (2044, 10587), (3066, 7058), (3529, 6132)]