21396417

素因数分解:

$3^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{1429}}^1$

素因数の和:1493

約数の個数: 32

約数和(自身を含む): 35143680

約数和(自身を除く): 13747263

約数列:

[1, 3, 7, 21, 23, 31, 69, 93, 161, 217, 483, 651, 713, 1429, 2139, 4287, 4991, 10003, 14973, 30009, 32867, 44299, 98601, 132897, 230069, 310093, 690207, 930279, 1018877, 3056631, 7132139, 21396417]

約数ペア:

[(1, 21396417), (3, 7132139), (7, 3056631), (21, 1018877), (23, 930279), (31, 690207), (69, 310093), (93, 230069), (161, 132897), (217, 98601), (483, 44299), (651, 32867), (713, 30009), (1429, 14973), (2139, 10003), (4287, 4991)]