21121944

素因数分解:

$2^3\times 3^1\times {\mathrm{43}}^1\times {\mathrm{97}}^1\times {\mathrm{211}}^1$

素因数の和:360

約数の個数: 64

約数和(自身を含む): 54848640

約数和(自身を除く): 33726696

約数列:

[1, 2, 3, 4, 6, 8, 12, 24, 43, 86, 97, 129, 172, 194, 211, 258, 291, 344, 388, 422, 516, 582, 633, 776, 844, 1032, 1164, 1266, 1688, 2328, 2532, 4171, 5064, 8342, 9073, 12513, 16684, 18146, 20467, 25026, 27219, 33368, 36292, 40934, 50052, 54438, 61401, 72584, 81868, 100104, 108876, 122802, 163736, 217752, 245604, 491208, 880081, 1760162, 2640243, 3520324, 5280486, 7040648, 10560972, 21121944]

約数ペア:

[(1, 21121944), (2, 10560972), (3, 7040648), (4, 5280486), (6, 3520324), (8, 2640243), (12, 1760162), (24, 880081), (43, 491208), (86, 245604), (97, 217752), (129, 163736), (172, 122802), (194, 108876), (211, 100104), (258, 81868), (291, 72584), (344, 61401), (388, 54438), (422, 50052), (516, 40934), (582, 36292), (633, 33368), (776, 27219), (844, 25026), (1032, 20467), (1164, 18146), (1266, 16684), (1688, 12513), (2328, 9073), (2532, 8342), (4171, 5064)]