21602980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{6709}}^1$

素因数の和:6748

約数の個数: 48

約数和(自身を含む): 54109440

約数和(自身を除く): 32506460

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 23, 28, 35, 46, 70, 92, 115, 140, 161, 230, 322, 460, 644, 805, 1610, 3220, 6709, 13418, 26836, 33545, 46963, 67090, 93926, 134180, 154307, 187852, 234815, 308614, 469630, 617228, 771535, 939260, 1080149, 1543070, 2160298, 3086140, 4320596, 5400745, 10801490, 21602980]

約数ペア:

[(1, 21602980), (2, 10801490), (4, 5400745), (5, 4320596), (7, 3086140), (10, 2160298), (14, 1543070), (20, 1080149), (23, 939260), (28, 771535), (35, 617228), (46, 469630), (70, 308614), (92, 234815), (115, 187852), (140, 154307), (161, 134180), (230, 93926), (322, 67090), (460, 46963), (644, 33545), (805, 26836), (1610, 13418), (3220, 6709)]