21850192

素因数分解:

$2^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{349}}^1$

素因数の和:420

約数の個数: 80

約数和(自身を含む): 53468800

約数和(自身を除く): 31618608

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 43, 52, 56, 86, 91, 104, 112, 172, 182, 208, 301, 344, 349, 364, 559, 602, 688, 698, 728, 1118, 1204, 1396, 1456, 2236, 2408, 2443, 2792, 3913, 4472, 4537, 4816, 4886, 5584, 7826, 8944, 9074, 9772, 15007, 15652, 18148, 19544, 30014, 31304, 31759, 36296, 39088, 60028, 62608, 63518, 72592, 105049, 120056, 127036, 195091, 210098, 240112, 254072, 390182, 420196, 508144, 780364, 840392, 1365637, 1560728, 1680784, 2731274, 3121456, 5462548, 10925096, 21850192]

約数ペア:

[(1, 21850192), (2, 10925096), (4, 5462548), (7, 3121456), (8, 2731274), (13, 1680784), (14, 1560728), (16, 1365637), (26, 840392), (28, 780364), (43, 508144), (52, 420196), (56, 390182), (86, 254072), (91, 240112), (104, 210098), (112, 195091), (172, 127036), (182, 120056), (208, 105049), (301, 72592), (344, 63518), (349, 62608), (364, 60028), (559, 39088), (602, 36296), (688, 31759), (698, 31304), (728, 30014), (1118, 19544), (1204, 18148), (1396, 15652), (1456, 15007), (2236, 9772), (2408, 9074), (2443, 8944), (2792, 7826), (3913, 5584), (4472, 4886), (4537, 4816)]