21187376

素因数分解:

$2^4\times 7^1\times {\mathrm{101}}^1\times {\mathrm{1873}}^1$

素因数の和:1989

約数の個数: 40

約数和(自身を含む): 47404704

約数和(自身を除く): 26217328

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 101, 112, 202, 404, 707, 808, 1414, 1616, 1873, 2828, 3746, 5656, 7492, 11312, 13111, 14984, 26222, 29968, 52444, 104888, 189173, 209776, 378346, 756692, 1324211, 1513384, 2648422, 3026768, 5296844, 10593688, 21187376]

約数ペア:

[(1, 21187376), (2, 10593688), (4, 5296844), (7, 3026768), (8, 2648422), (14, 1513384), (16, 1324211), (28, 756692), (56, 378346), (101, 209776), (112, 189173), (202, 104888), (404, 52444), (707, 29968), (808, 26222), (1414, 14984), (1616, 13111), (1873, 11312), (2828, 7492), (3746, 5656)]