21065200

素因数分解:

$2^4\times 5^2\times {\mathrm{13}}^1\times {\mathrm{4051}}^1$

素因数の和:4082

約数の個数: 60

約数和(自身を含む): 54515608

約数和(自身を除く): 33450408

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 40, 50, 52, 65, 80, 100, 104, 130, 200, 208, 260, 325, 400, 520, 650, 1040, 1300, 2600, 4051, 5200, 8102, 16204, 20255, 32408, 40510, 52663, 64816, 81020, 101275, 105326, 162040, 202550, 210652, 263315, 324080, 405100, 421304, 526630, 810200, 842608, 1053260, 1316575, 1620400, 2106520, 2633150, 4213040, 5266300, 10532600, 21065200]

約数ペア:

[(1, 21065200), (2, 10532600), (4, 5266300), (5, 4213040), (8, 2633150), (10, 2106520), (13, 1620400), (16, 1316575), (20, 1053260), (25, 842608), (26, 810200), (40, 526630), (50, 421304), (52, 405100), (65, 324080), (80, 263315), (100, 210652), (104, 202550), (130, 162040), (200, 105326), (208, 101275), (260, 81020), (325, 64816), (400, 52663), (520, 40510), (650, 32408), (1040, 20255), (1300, 16204), (2600, 8102), (4051, 5200)]