208568120

素因数分解:

$2^3\times 5^1\times {\mathrm{401}}^1\times {\mathrm{13003}}^1$

素因数の和:13415

約数の個数: 32

約数和(自身を含む): 470484720

約数和(自身を除く): 261916600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 401, 802, 1604, 2005, 3208, 4010, 8020, 13003, 16040, 26006, 52012, 65015, 104024, 130030, 260060, 520120, 5214203, 10428406, 20856812, 26071015, 41713624, 52142030, 104284060, 208568120]

約数ペア:

[(1, 208568120), (2, 104284060), (4, 52142030), (5, 41713624), (8, 26071015), (10, 20856812), (20, 10428406), (40, 5214203), (401, 520120), (802, 260060), (1604, 130030), (2005, 104024), (3208, 65015), (4010, 52012), (8020, 26006), (13003, 16040)]