21720930

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{9403}}^1$

素因数の和:9431

約数の個数: 64

約数和(自身を含む): 65000448

約数和(自身を除く): 43279518

約数列:

[1, 2, 3, 5, 6, 7, 10, 11, 14, 15, 21, 22, 30, 33, 35, 42, 55, 66, 70, 77, 105, 110, 154, 165, 210, 231, 330, 385, 462, 770, 1155, 2310, 9403, 18806, 28209, 47015, 56418, 65821, 94030, 103433, 131642, 141045, 197463, 206866, 282090, 310299, 329105, 394926, 517165, 620598, 658210, 724031, 987315, 1034330, 1448062, 1551495, 1974630, 2172093, 3102990, 3620155, 4344186, 7240310, 10860465, 21720930]

約数ペア:

[(1, 21720930), (2, 10860465), (3, 7240310), (5, 4344186), (6, 3620155), (7, 3102990), (10, 2172093), (11, 1974630), (14, 1551495), (15, 1448062), (21, 1034330), (22, 987315), (30, 724031), (33, 658210), (35, 620598), (42, 517165), (55, 394926), (66, 329105), (70, 310299), (77, 282090), (105, 206866), (110, 197463), (154, 141045), (165, 131642), (210, 103433), (231, 94030), (330, 65821), (385, 56418), (462, 47015), (770, 28209), (1155, 18806), (2310, 9403)]